Mouse type: Wireless, Optical Connector Type: USB Number of buttons: 5 Scroll Wheel: 1 Color: Silver Other features: Resolution: 500/1000/2000 DPI Switchable, Frequency: - 2400MHz, Range 10 meters, LED - Low Battery, On/Off button, Batteries - 2 x AAA, Battery life - 250h, dimensions 66x107x42 mm Acceleration: 2 g Max, Low-Power Technology FHSS FSK Operating System: Microsoft ® Windows ® XP, Windows Vista ®, Windows ® 7 or Apple ® Mac ® OSX ™