HP 280 Wireless Mouse, Quiet Click, BlueLED, Wireless, 18-Month Life, Ergonomic, Black (Model Number: 19U64AA#UUF), Compatible with Mac, Windows PC,

Connection: USB-A receiver connection (2.4GHz) *The USB dongle for connection can be stored inside the main unit Uses HP Blue Optical Technology for smooth operation even without a mouse pad Buttons: 3 buttons (with built-in scroll wheel) Dimensions (width x depth x height): Approx. 70mm x 110mm x 40mm Weight: Approx. 93g (excluding): 1 x AA battery (alkaline included) The ergonomic design reduces fatigue and allows for comfortable use all day long.