3D OPTICAL MOUSE,PS/2 USB, U+P available, WIRELESS OPTICAL MOUSE Resolution: 800dpi, 2.4GMHZTransmission distance(shielding room) : 6 meterNumber of Button/Wheel:3 Button ,1 WheelRunning life: 500 Miles MAX:30.00mA @ 3.0V(white)Operation frequency: 2402MHz2481MHzBattery: 3V in serie. JNP-ML5805X - 6D super mini rf wireless optical mouse