Specifications Weight 119g Dimensions 99mm*50mm*29mm Cabling 1.5M USB Cable (USB 1.1) LCD 29mm*13.5mm; 128*64 Pixel Mouse Optical Sensor 800 dpi Earphone Connector 2.5mm Voltage 4 to 5.25 V Operating Humidity 5~95%RH Operating Temperature 0 to 40C User Manual for USB Skype Mouse - 4 - Version 1.0.0.2 2007-01-23