Specification:Item Type: Wireless MouseMaterial: ABSModel: M3DMConnection: Wireless 2.4g, BTWireless Distance: Approx.10m / 10.9ydDPI: 800-1200-1600 Three Level Battery Type: 1 x AA Battery (Battery Not Included)How to Use:2.4g: Plug and PlayBT: Stand alone mouse BT pairing key, select BT1, press and hold the pairing key for three seconds, the BT1 green light flashes slowly, and the mobile computer device can search for connection.Package List:1 x Mouse1 x Receiver