BlueTrack Technology® - Take advantage of BlueTrack Technology, which combines the performance of an optical mouse with the precision of a laser mouse and offers comfortable work on almost any type of surface (BlueTrack Technology does not work on clear glass or mirrored surfaces).

Easy-to-plug miniature transmitter - When you're on the go, you can leave the miniature transmitter plugged in or plug it into the mouse.

8-month battery life - Use your mouse for up to eight months without changing batteries. A battery status indicator will alert you when the battery is low.

Power switch - When you are not using the mouse, you can save battery power by turning it off.
Comfort for both hands - The mouse can be used with either hand. Thanks to its universal design, it is always equally comfortable.
Wireless transmission - 2.4 GHz frequency
Typical wireless range 5 meters
Three-year limited warranty
System requirements:

Windows computer:

Windows 8.1, Windows 8, Windows RT, Windows 7, Windows Vista, Windows XP (except Windows XP 64-bit)
150 MB of free hard disk space
USB
Requires 1 AA alkaline battery (included)
Macintosh computer:

Mac OS X versions 10.4x-10.7
30 MB of free hard disk space
USB
Requires 1 AA alkaline battery (included)