Specification:Keys: 9Wireless data transmission: 1MbpsFrequency: 2405MHZ-2476MHZChannel: 32Engine: OpticalOperating voltage: 3VKey life: 500 million timesProduct size: 130x85x40mmOperating Current: 15mAStandby current: 1.3mASleep Current: 50uANo reception status: 10-25uADPI: 600-1000-1600-2400Maximum acceleration: 20GPackage Includes:1 x 9 Buttons Game Mouse (without retail box and Battery)