Robust wireless connection with advanced 2.4GHz 2 Way fast digital RFUp to 10 meters operation distanceSleep Mode for maximum battery lifeResolution: 800/1200/1600 dpiInput Battery Power: 1.5V AAA x 2Weight: 67g (Mouse); 1.6g (Receiver)Dimension: 118mm x 65mm x 38mm (Mouse);