Brand: FOR ONLY/ MashangModel: V17Interface type: USBColor: blue， black， white， green， pinkMaximum wireless distance: about 8-10mBattery: RechargeableWireless technology: 2.4GHzWorking mode: photoelectricKey number: 3Optical resolution: 1600dpiRoller number: 1Whether to support the human engineering support:Color: New