... Technology!
Features
Microsoft BlueTrack Technology combines the power of optical with the
precision of laser for remarkable tracking on virtually any surface
Leave the Nano Transceiver plugged in when you're on the go, or stow
it in the mouse
Use your mouse without power interruption for up to 8 months on a
single battery. Battery status indicator tells you when battery power
is low
Conserve more battery power by turning your mouse off when not in use
Use your mouse with your left or right hand-ambidextrous design makes
it comfortable either way
Extra Info
Mouse Type: Wireless
Motion Sensing Technology: BlueTrack
Colour: Black