Microsoft Arc Touch BlueTrack USB Mouse (Black)

Connectivity - USB only Power on and off. Curve to turn on. Flatten to turn off. No button to switch BlueTrack technology (not bluetooth) combines the power of optical with the precision of laser for remarkable tracking on virtually any surface ( does not work on clear glass or mirrored surfaces) More than six months of battery life without having to change batteries. Battery status indicator tells you when battery power is low Vertical touch scrolling with haptic feedback that you can feel. Compatible with Windows and Android OS Flexible design. Curve for comfort, flatten to pack. A perfect fit for your hand and your mobile lifestyle, Platforms: Windows