Bluetooth FAQ

This document is an FAQ (Frequently Asked Questions) about Bluetooth in general and Logitech products using Bluetooth technology.
Logitech Cordless Desktop MX 5000 Laser
Logitech diNovo Media Desktop Laser

Contents

1 What you should know about Bluetooth.. 1
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 What is Bluetooth?.... 1 What is the "Bluetooth SIG"?... 1 What is the range of Bluetooth?... 1 What is Bluetooth 2.0 with Enhanced Data Rate (EDR)?.. 1 What is the data transmission rate of Bluetooth 2.0 with EDR?.. 2 What are the main differences between Bluetooth 1.2 and Bluetooth 2.0 EDR?. 2 Which Bluetooth specification are Logitech products compatible with?.. 3 What is the range of Logitech Bluetooth products?.. 3 What are the differences between Wi-Fi (802.11b) and the Bluetooth wireless technology?.... 3
1.10 Will using Wi-Fi and Bluetooth technologies together cause interference?.. 3 1.11 What does "Pairing" mean, and what is a Passkey?... 3 1.12 What is "discoverable mode" (or "visible mode")?.. 4 1.13 What is a Bluetooth "profile" (or "service")?.. 4 1.14 What are the Bluetooth profiles supported by Logitech products?. 5 1.15 What is a Bluetooth "stack"?... 5 1.16 Which Bluetooth stack (software) is used in Logitech products?.. 5 1.17 Is Bluetooth harmful?.... 5 1.18 Can I access the BIOS settings of my system with my Bluetooth keyboard?.. 6 1.19 Can I use my Logitech product even if I have not installed the Bluetooth stack (software) yet?... 6 1.20 What makes Bluetooth desktops from Logitech the most advanced keyboard and mouse combos with this technology?... 6
Connecting with Bluetooth - Interoperability of Logitech products. 7
2.1 2.2 2.3 2.4 2.5 2.6 What Bluetooth devices can I connect to the Bluetooth wireless hub from Logitech?. 7 I have a system with Bluetooth built-in. Can I use Logitech products without limitation?.... 7 I have a system with Bluetooth built-in (e.g. a laptop). Can I use the Logitech Bluetooth keyboard or mouse without using the Logitech Bluetooth wireless hub?. 7 I have a laptop with Bluetooth built-in. What should I do?... 7 Will my Logitech devices work with the Microsoft Bluetooth stack?.. 8 I have a Bluetooth PDA (or Smartphone). Can I use my Logitech keyboard or mouse with it?.... 8

2005 Logitech, Inc.

Bluetooth FAQ Version 2.0
Learn what you can do with the Bluetooth wireless hub. 9
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 What can I do with the wireless hub?... 9 Do I have to be in sight of the Bluetooth wireless hub?... 9 What should I do to synchronize my mobile phone?.. 9 How do I easily transfer pictures and files between my computer and my mobile phone?.....10 How do I do voice over Instant Messaging with my Bluetooth headset?..10 How do I listen to music wirelessly with a Bluetooth headphone?.10 How do I enable wireless printing?...10 I am using the Serial Port Profile and I have been asked to set up a virtual COM port. What is it?....10
Learn about Logitech Cordless Desktop MX 5000 Laser. 11
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 What are the key features of this product?..11 What information do I get on the Keyboard LCD display?..11 How can I set up time and date?...12 I understand that I can launch my favorite music playlist from the LCD. Which media players are supported?...12 How can I change the playlist order that appears on the keyboard LCD?..12 I understand that I can launch online radio from the LCD. Which media players are supported?...12 How can I change the order of online radio stations that appear on the keyboard LCD?....13 I understand that I can paste calculator results into any computer application. How do I do this?....13 I understand that I can receive email and instant messaging notifications on the keyboard LCD. What applications are supported?...13
4.10 How can I assign an application, document, folder or website to a Smart Key (F9 to F12)?....13 4.11 What is the Touch Sensitive Media Center located on the left side of the keyboard?.13 4.12 The MX 5000 features "SecureConnect" technology. What is this?..13 4.13 What is the "SYNC" hot key for?....14 4.14 What is the "Media" button?...14 4.15 What can I do with the Bluetooth wireless hub?..15 4.16 What is the battery life of this product?..15 4.17 Which Logitech mouse is supplied with the Cordless Desktop MX 5000 Laser desktop?....15

What you should know about Bluetooth
This section introduces you to Bluetooth technology.

What is Bluetooth?

Bluetooth is a standard wireless technology that lets users make effortless, fast connections between appropriate mobile devices and computers. Bluetooth ensures protection from interference, increases data security, and provides greater wireless range. It is a global standard and is backed by major industry leaders in the telecommunications, computer and consumer electronics (such as 3Com, Ericsson, IBM, Intel, Microsoft, Motorola, Nokia, Sony and Toshiba). Bluetooth is based on a low-cost, low power, short-range radio link. Bluetooth cuts the cords that used to tie up digital devices. When two Bluetooth equipped devices come within 10 meters range of each other, they can establish a connection together. And because Bluetooth utilizes a radio-based link, it doesn't require a line-of-sight connection in order to communicate. Bluetooth uses the global available and unlicensed 2.4 GHz ISM band. As opposed to other 2.4 GHz technologies, Bluetooth is a universal standard. In the future, Bluetooth is likely to be standard in tens of millions of mobile phones, PCs, laptops and a whole range of other electronic devices. As a result, the market is going to demand new innovative applications, value-added services, end-to-end solutions and much more. The possibilities opened up really are limitless, and because the radio frequency used is globally available, Bluetooth can offer fast and secure access to wireless connectivity all over the world. With potential like that, it's no wonder that Bluetooth is set to become the fastest adopted technology in history. For more information on Bluetooth, please visit the official Bluetooth site: www.bluetooth.com
What is the "Bluetooth SIG"?
The Bluetooth Special Interest Group (SIG) is a trade association of leaders in the telecommunication, computing and networking industries who are driving the development of Bluetooth specifications. Logitech is an associate member of the Bluetooth SIG and full member of the HID working group.
What is the range of Bluetooth?

Bluetooth wireless technology in its base implementation supports a range of 10 meters (33 feet). This is the maximum distance a connection can be guaranteed in all conditions. Some devices on the market have more powerful transceivers and as such, are likely to have greater range. This is the case for the Logitech Bluetooth hub, and is the reason why the range of Logitechs Bluetooth keyboards and mice is usually much higher than 10 meters (33 feet). It is also important to note that range is also impacted by building materials and interference.
What is Bluetooth 2.0 with Enhanced Data Rate (EDR)?
With the announcement of the 2.0 + EDR (Enhanced Data Rate) specification, Bluetooth wireless technology took a bold new step. Adopted for qualification by the Bluetooth SIG in November of 2004, this new specification is fully backwards compatible with previous Bluetooth specification versions. The key new features are: Faster data rates. Up to three times that of previous levels. Lower power consumption and longer battery life through a reduced duty cycle.
This new Bluetooth generation offers new possibilities for next-generation applications for consumers worldwide, including: Enhanced stereo audio applications. Internet quality video applications. Further power optimization. Multiple connections from a single device.
Logitechs diNovo Media Desktop Laser and Cordless Desktop MX 5000 Laser are both using Bluetooth 2.0 with EDR technology, making these products ready to communicate with the latest generation of Bluetooth devices.
What is the data transmission rate of Bluetooth 2.0 with EDR?
The data transmission rate for Bluetooth 2.0 EDR communication is theoretically at 3Mb/s (Megabits per second), making it 3 times faster than the previous generation.

Source: Bluetooth SIG

What are the main differences between Bluetooth 1.2 and Bluetooth 2.0 EDR?
The main motivation for the release of the new version was to improve existing usage scenarios that require increased data throughput. Scenarios requiring higher throughput may be image transfer, printing and synchronizing. In these cases the new release makes the Bluetooth wireless technology faster and better for the consumer to use. The main features offered with these enhancements are: Backwards compatibility with earlier versions. 3 times the transmission speed makes existing usage scenarios better. Lower power consumption through reduced duty cycle. Simplification of multi-link scenarios due to more available bandwidth. Further improved BER (Bit Error Rate) performance.

An industry first, Logitech's SecureConnect Technology featured in products such as the Cordless Desktop MX5000 Laser means that the wireless keyboard and mouse have been pre-connected to the receiver. This not only provides an instant secure link with the computer right from the start but also means that a passkey is no longer required, the main benefit of which is a faster, hassle-free installation.
1.12 What is "discoverable mode" (or "visible mode")?
For one device to initially "find" another Bluetooth device, one product must be in discoverable mode (be "visible"), while the other performs a device discovery (or "device search"). The way you put your product in a discoverable mode varies by device and by manufacturer. Most devices allow a user to configure the default state. Please consult the documentation that came with your Bluetooth device to find specific instructions on device discovery. For security reasons it is recommended that you do not usually leave your devices in a discoverable state. However, there are usage cases where this does make sense for example, a Bluetooth printer in a shared area would be a good example of a device that should always be in discoverable state. Logitech keyboards and mice are in discoverable mode when you press the 'Connect' button located on the bottom.
1.13 What is a Bluetooth "profile" (or "service")?
A profile or service is a list of options, features or functionality available for a specific Bluetooth device. Since Bluetooth wireless technology is used for many different types of applications, it is necessary to describe how the different devices and their applications should operate together. For example, profiles or services available for a Bluetooth-enabled mobile phone may include Dial-up Networking, PIM Item Transfer, PIM Synchronization, Network Access, and so on. For devices to work together, it is important that each device shares the same profile. For example: If you want to connect a headset to a mobile phone you need the 'headset' profile in both devices. If you want to establish a dial-up session to reach the Internet from a PDA connected to a mobile phone, you need the 'dial-up networking' profile in both devices. A mouse, which typically supports the HID (Human Interface Device) profile, and a mobile phone are unlikely to work due to the fact that, presently, there are no phones that support the HID profile or service.

Bluetooth radios operate at much lower power levels than phones so, not surprisingly, the radiation added by a Bluetooth device is insignificant by comparison. A study by William G. Scanlon of Queen's University in Belfast found that a typical Ericsson (ERICY) Bluetooth radio module generates an SAR of just 0.001 watts per kilogram.
1.18 Can I access the BIOS settings of my system with my Bluetooth keyboard?
Yes. During boot, your Bluetooth keyboard acts as a standard USB keyboard. This means you can use it to manage your BIOS setting or enter a boot password without the need for a second keyboard as long as your BIOS does not require a PS/2 keyboard in order to boot. If that is the case, you may have to upgrade your BIOS (refer to your computer documentation for instructions).
1.19 Can I use my Logitech product even if I have not installed the Bluetooth stack (software) yet?
Yes. Logitech Bluetooth products are "Plug & Play". This means you can already use your keyboard even if you have not installed the software. Obviously, you need to install the software to get all the features of the product. It also means you don't need to have an existing keyboard and mouse to install Logitech desktops for Bluetooth. This is particularly useful if you bought a new system.
1.20 What makes Bluetooth desktops from Logitech the most advanced keyboard and mouse combos with this technology?
With diNovo Media Desktop Laser and Cordless Desktop MX 5000 Laser, Logitech is launching its third generation Bluetooth keyboard and mouse combo, each generation bringing its own set of innovation and industry firsts: In October 2003, Logitech launched the first Bluetooth desktops with plug and play support, meaning no other keyboard and mouse were required to install it. In addition, these products were the first to come with BIOS support, meaning users could access their BIOS or enter a password during boot. In September 2004, Logitech introduced the first Bluetooth desktop supporting Bluetooth 1.2 specification, offering better battery life and improved connectivity. In 2005, Logitech is now launching the first Bluetooth desktop with SecureConnect technology, making the out-of-the-box experience simpler and faster by skipping the pairing process (all devices being pre-connected and encrypted at the factory). Logitech is also introducing for the first time Bluetooth desktops featuring a rechargeable Laser mouse. In addition, these desktops are the only ones to offer audio support, meaning the user can connect a Bluetooth headset for voice over instant messaging or listen to audio wirelessly with a Bluetooth headphone.

Connecting with Bluetooth - Interoperability of Logitech products
This section describes the way Logitech products can work together.
What Bluetooth devices can I connect to the Bluetooth wireless hub from Logitech?
Any device compatible with the Bluetooth 2.0 with EDR specification and featuring one or more of our supported profiles will work with our Bluetooth wireless hub. In addition, Bluetooth 2.0 with EDR is backwards compatible with previous Bluetooth generations (1.0 or 1.2), meaning you can still connect your older Bluetooth devices. Please refer to our currently supported devices (www.logitech.com/bluetooth/howto).
I have a system with Bluetooth built-in. Can I use Logitech products without limitation?
We assume that you are enjoying your Bluetooth experience on your PC or notebook and you wish to continue. For this reason we will NOT install our Bluetooth stack when another Bluetooth stack is detected. However, the keyboard and mouse will be fully functional, working in "embedded mode" (e.g. the Bluetooth software required for your keyboard and mouse is "embedded" in the Bluetooth wireless hub). If you want to connect additional Bluetooth devices to your computer, such as a mobile phone, you will have to use your existing Bluetooth solution.
I have a system with Bluetooth built-in (e.g. a laptop). Can I use the Logitech Bluetooth keyboard or mouse without using the Logitech Bluetooth wireless hub?
We have provided our keyboard and mouse with the Bluetooth wireless hub mini-receiver because very few computers are Bluetooth enabled and we want to provide the best Bluetooth experience to our customers. However, if you already have a system (typically a laptop/notebook) with built-in Bluetooth and the HID profile, you can directly connect the Bluetooth keyboard and mouse, without using our Bluetooth mini-receiver. However: You need to first pair the keyboard and mouse with the laptop Bluetooth stack. If your system is using a different Bluetooth stack than the one supplied with Logitech products, you may not be able to enjoy the features of the Logitech Bluetooth wireless hub.
I have a laptop with Bluetooth built-in. What should I do?
The MX 5000 Laser and diNovo Laser have been optimized to work with any laptop with built-in radio using WIDCOMM stack v.1.4.2.21 or above and Windows XP SP2 stack. This means our software ("SetPoint") will recognize your configuration and offer a special installation, allowing you to enjoy the features offered by your Logitech Bluetooth product in conjunction with your laptop.

You may need to upgrade your system to the latest Bluetooth stack available for your laptop. Please refer to your laptop manufacturers support documentation for more information.
Will my Logitech devices work with the Microsoft Bluetooth stack?
Yes. However, our Bluetooth products have been optimized with the Bluetooth stack we provide. Therefore, for optimal performance, we recommend you use the Bluetooth stack provided with your Logitech product.
I have a Bluetooth PDA (or Smartphone). Can I use my Logitech keyboard or mouse with it?
Yes, as long as your Bluetooth PDA or Smartphone comes with a Bluetooth stack that includes the HID profile, you can connect your keyboard or mouse to it. Refer to your device's documentation for further information.
Learn what you can do with the Bluetooth wireless hub
This section provides a useful overview of what features the Bluetooth wireless hub from Logitech offers.
What can I do with the wireless hub?
Your Bluetooth wireless hub makes your computer a Bluetooth control center. Once youve installed it, you can truly work differently, taking advantage of Bluetooth-enabled devices:

Cordless Freedom:

Use your mouse or keyboard wirelessly. Print to a Bluetooth printer.

Synchronize:

Your mobile phone with your computer. Your Bluetooth PDA with your computer.

Unleash your Media:

Easily transfer pictures and files between your computer and your Bluetooth mobile devices. Listen to your digital music wirelessly with a Bluetooth headset.

Communicate:

Use a Bluetooth headset to do voice over instant messaging.
Do I have to be in sight of the Bluetooth wireless hub?
No, this is not a requirement. You just need to be within range of the wireless hub. For example, it is possible for a PDA and a Bluetooth enabled computer to link to each other even if they are across the room from each other or if the PDA is inside a briefcase or pocket.
What should I do to synchronize my mobile phone?

To synchronize your mobile phone with your Personal Information Manager application (MS Outlook, Outlook Express or Lotus Notes), do the following: 1. 2. 3. 4. Pair your phone with the Bluetooth wireless hub. Install the PC Suite supplied with your device (e.g. Nokia PC Suite if you have a Nokia phone). Press the Easy Synchronization hot key, of your keyboard. Following the on-screen instructions. , usually located in the top left-hand corner
If you need more information, please refer to our online "How To" documents for step-by-step instructions related to your specific device (www.logitech.com/bluetooth/howto).
How do I easily transfer pictures and files between my computer and my mobile phone?
To transfer a picture over Bluetooth to the computer, simply use your phone option 'send picture over Bluetooth', then select your computer as the destination and agree on the computer that you want to receive the pictures. They are sent to your personal folder. In addition, you can send pictures to your mobile phone. Please refer to our online "How To" documents for step-by-step instructions related to your specific device (www.logitech.com/bluetooth/howto).
How do I do voice over Instant Messaging with my Bluetooth headset?
Voice over instant messaging using a Bluetooth headset is possible with MSN Messenger 7, Yahoo Messenger 6.0, AOL Instant Messenger (AIM) 5.9, and with Skype. You must first pair your Bluetooth headset with the Logitech Bluetooth wireless hub and connect your headset. You can then enjoy voice over instant messaging. Some instant messaging applications need to be restarted after the connection of the Bluetooth headset in order to use the correct audio output channel. Please refer to our online "How To" documents for step-by-step instructions related to your specific device (www.logitech.com/bluetooth/howto).
How do I listen to music wirelessly with a Bluetooth headphone?
All you need is a Bluetooth headphone and a media player such as iTunes or Windows Media Player 10. For optimal results, it is recommended you use a headphone with Bluetooth 2.0 Enhanced Data Rate, to benefit from the maximum bandwidth (up to 3Mb/s). Please refer to our online "How To" documents for step-by-step instructions related to your specific device (www.logitech.com/bluetooth/howto).
How do I enable wireless printing?
To enjoy wireless printing with Bluetooth, you must first pair your printer with the Logitech Bluetooth wireless hub and then install the printer drivers. Please make sure the Bluetooth printer or Bluetooth dongle for the printer is using the HCRP profile. We do not recommend using the Serial Port profile. Please refer to our online "How To" documents for step-by-step instructions related to your specific device (www.logitech.com/bluetooth/howto).

I am using the Serial Port Profile and I have been asked to set up a virtual COM port. What is it?
A virtual COM port emulates the behavior of a physical serial port. Every computer has two COM ports (also called Serial ports) and has the capability of adding virtual COM ports. Devices can communicate to each other via a virtual serial link as long as they both are using the same COM port (for example COM port 6). For a computer application, a virtual COM port behaves the same as a physical COM port, and therefore allows an application designed to deal with a physical serial communication (such as HotSync) to work wirelessly.
Learn about Logitech Cordless Desktop MX 5000 Laser
This section provides some FAQs for the Logitech Cordless Desktop MX 5000 Laser desktop.
What are the key features of this product?
The Logitech Cordless Desktop MX 5000 Laser is the Worlds First Smart Desktop. Ordinary keyboards and mice only send information to the computer. The Logitech Cordless Desktop MX 5000 Laser also sends information back to the user. Its the smart desktop that combines an LCD keyboard display, a high-speed Bluetooth wireless hub with SecureConnect technology, the precision of a MX Laser mouse, and innovative media controls.
What information do I get on the Keyboard LCD display?
The Logitech Cordless Desktop MX 5000 Laser features an integrated keyboard display for instant feedback such as Caps Lock and F Lock status, low battery notification, and so on. It also shows the time and date, and automatically synchronizes with your computers clock. Temperature (ambient temperature of the room, in Celsius or Fahrenheit) and active XP user account name are also displayed.
Hot keys and F keys: The Keyboard LCD display also indicates the destination of a hot key and lists
the assignment of the smart keys (F9 to F12):
Media: The LCD display indicates media playback information (artists name, songs name, total time, and so on) whenever a music track is played using the following media players: Musicmatch, iTunes, Windows Media Player 9 and 10, Winamp 5:

The hot key called "Easy Synchronization", located at the top left-hand corner of the keyboard, enables one touch synchronization of a mobile phone with your Personal Information Manager, such as MS Outlook, over Bluetooth. To view the list of compatible Bluetooth phones and PDAs, please visit www.logitech.com/bluetooth
4.14 What is the "Media" button?
The "Media" button launches MediaLife, bringing together your digital pictures, video clips and music playlist in a single bold interface. MediaLife is easy to navigate with your MediaPad (make sure it is in Navigation mode).
This is the home page of MediaLife. You can choose to work with your photos, music, or video collections. The fourth menu option, settings, allows you to configure certain system parameters and personal style options. Note the use of a camera image to reinforce the highlighted Pictures menu choice.
MediaLife supports the viewing of many file types (bmp, jpg, jpeg, tif, tiff, png). Images can be viewed individually or as a slide show. Pictures can even be edited. To open a folder, you simply click on it once.
4.15 What can I do with the Bluetooth wireless hub?
Please refer to section 3 Learn what you can do with the Bluetooth wireless hub.
4.16 What is the battery life of this product?
The battery life for the keyboard is up to 6 months. The mouse is rechargeable and gives 15 days of autonomy.
4.17 Which Logitech mouse is supplied with the Cordless Desktop MX 5000 Laser desktop?
The Logitech MX 1000 Laser mouse for Bluetooth is supplied as part of the Cordless Desktop MX 5000 Laser desktop. For more information on the MX 1000 Laser mouse, please refer to section 6 Learn about Logitech MX 1000 for Bluetooth Mouse.
Learn about Logitech diNovo Media Desktop Laser
This section provides some FAQs for the Logitech diNovo Laser desktop.

Why "diNovo"?

From the Latin "novo", new, fresh, original. De novo = from the beginning. de becomes di to suggest digital a new way to orchestrate digital media. The whole idea is fresh new beginning, from the ground up. "diNovo" also communicates the style, elegance and premium aspect of this product.

What is the MediaPad?

We have re-invented what a numberpad can do! The MediaPad is a Bluetooth remote control/commander for todays full-screen and intuitive digital media interface. The MediaPad enables you to work, play and communicate with one touch. Work use the MediaPad as a calculator or numpad, allowing you to effortlessly paste numbers into an application such as Excel. Play use the MediaPad to enjoy digital music with pictures or video to run a slide show from a distance; launch the Logitech Media Desktop or MediaLife software to view, select, and play favorite jukebox tunes, or video clips. Communicate use the MediaPad to view the current song and artist you are listening to; be notified of email and instant messages.

What can I do with the Bluetooth wireless hub?
Which Logitech mouse is supplied with the diNovo Media Desktop Laser?
The Logitech MX 1000 Laser mouse for Bluetooth is supplied as part of the diNovo Media Desktop Laser. For more information on the MX 1000 Laser mouse, please refer to section 6 Learn about Logitech MX 1000 for Bluetooth Mouse.
What is the battery life?
The battery life for the keyboard is up to 6 months, for the MediaPad is up to 3 months, and the mouse is rechargeable and gives 15 days of autonomy.
Is it possible to use rechargeable batteries in the keyboard or MediaPad?
Yes, however, we do not recommend using rechargeable batteries in these products.
What is the "123" button on the MediaPad?
The MediaPad has 3 different modes: Numeric Pad mode, PC Remote Control mode and button switches the MediaPad to Numeric Pad mode. You can then Calculator mode. The use your MediaPad as a classic numeric pad.
What is the "NAV" button on the MediaPad?
The MediaPad has 3 different modes: Numeric Pad mode, PC Remote Control mode and button switches the MediaPad to PC Remote Control mode and Calculator mode. The activates all the blue keypad functions. You can then use the MediaPad to remotely command your PC.
What is the "+ / =" button on the MediaPad?
The MediaPad has 3 different modes: Numeric Pad mode, PC Remote Control mode and Calculator button switches the MediaPad to Calculator mode. You can then use the MediaPad mode. The as a smart calculator and paste the results into any open application.
5.10 What is the "Clear Screen" button on the MediaPad?
The "Clear Screen" button erases the content of the MediaPad display. For instance, once you have received an email notification, you can erase it by pressing "Clear Screen" this erases the notification, not the email in your mailbox.
5.11 What is the "Media" button?
Please, refer to section 4.13 What is the "SYNC" hot key for? hot key called "Easy Synchronization", located at the top left-hand corner of the The keyboard, enables one touch synchronization of a mobile phone with your Personal Information Manager, such as MS Outlook, over Bluetooth. To view the list of compatible Bluetooth phones and PDAs, please visit www.logitech.com/bluetooth What is the "Media" button?
5.12 I understand that I can receive email or Instant Messaging notifications on the display of the MediaPad. Which email clients are supported?

Figure 3: Interpreting differences in image fingerprints can be translated to movement of the mouse
Laser illumination reveals structure that an LED simply cannot express. The coherent nature of laser light creates patterns of high contrast when its light is reflected from a surface. The pattern appearing on the sensor reveals details on any surface, even glossy surfaces that would look totally uniform when exposed to the LED incoherent illumination (Figure 4). The precision image sensors then have no difficulties in tracking on these patterns and calculating position and movement. This is how laser enables tracking on virtually any surface.
Figure 4: Laser uncovers surface features not detected by LED.
Could the Laser Engine harm me?
A quick look around any home reveals lasers improving our lives. From CD and DVD players to printers and handheld pointers, lasers designed for consumer use offer enormous benefits and a high degree of safety. But lasers also conjure up images of destructive ray guns, a staple of science-fiction movies. Fortunately, thats not the case with Logitechs laser mouse technology. Logitechs laser mice are perfectly safe for consumers, earning a Class I eye-safe designation. After all, transmitting a beam of light for the tiny distance required, less than an inch, requires only a minuscule amount of power.
How long does it take to recharge the mouse?
It takes only 10 minutes of charging to provide enough power for one full day of use. It takes approximately 4 hours to fully charge the MX 1000.
How long can I use the mouse once its fully charged?
The mouse has an autonomy of approximately 15 days. This number may vary depending on the activity level. It takes only 10 minutes of charging to provide enough power for one full day of use. It takes approximately 4 hours to fully charge the MX 1000.
Does it harm the mouse to leave it on the cradle?
No, the charge algorithm will detect the end of charge and then conserve the full battery charge without over-charging. Just make sure the power-brick stays powered as long as the mouse remains on the cradle, otherwise the batteries will discharge again.
Can I interrupt a charging session before the end of charge?
Yes, you can interrupt a charging session; the mouse will just run for a shorter period of time before it needs a new recharge.
Is it true that if I never complete a full charge of the batteries, I might damage them or shorten their total life?
No, you won't damage the batteries or the mouse with partial recharge. Nevertheless, we recommend letting the charge complete fully until the end as often as possible.
Should I put the mouse on the cradle immediately each time I stop using it? Is there an optimal period for recharge?

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