Product information: Power Supply: Built-in Rechargeable Battery Colors: X3 Tri-Mode Mouse Black (S203), X3 Tri-Mode Mouse Gray (S203), X3 Tri-Mode Mouse Silver (S203) Battery Type: Lithium Battery Compatible Devices: Laptop Computers Interface: USB Operating Mode: Optical Cable Length: 1.5 meters Product Dimensions: Mouse Size 110*55*35 mm