Long battery life up to 12months Intuitional +/- DPI switching buttons 5 customized buttons -assign button function through GIGABYTE Sim software 3 stages blue LED indicator- 800/1200/1600dpi Comfortable rubber grip Specifications Interface : USB Tracking System : Laser Frequency : 2.4GHz wireless technology Resolution : 800/1200/1600dpi Adjustable FPS (Frame rate per second) : 3000 frames per second Report rate : 125 reports per second Battery life : 12 months (It may vary depending on user"s operating condition.) Certificate : CE/ FCC/ BSMI/ NCC Colour : Black Dimensions : (L)124.5 x (W)77.6 x (H)41.8 mm Weight : 106g (excluding batteries) Packing Contents : Mouse, Nano receiver, AA x 2 Support OS : Windows 98/2000/ME/XP 32bit/ Vista/ Win 7