1.Radio frequency 27MHz, Dpi 800 2.It has 256ID code, there is no interference even many mice being used at the same time. 3.Waiting current<50 uA, working current<25mA 4.Support Win95/98/Me/2000/XP 5.Work distance: within 0.6-1.5m 6.switch life:150,000,000 times. 7. Super mini build-in receiver, outstanding design, as bellow, press the receiver-out button, and then the receiver can spring out automatically. At this time, mouse begin to work, if you push the receiver back to the transmitter, power will cut down automatically.