Microsoft Precision Mouse Bluetooth Black Colour: Black Ergonomic Fit: Right-handed Only Movement Detection: Optical Number of Total Buttons: 6 Pointing Device Connectivity Technology: Cable/Wireless Pointing Device Host Interface: USB 2.1 Pointing Device Wireless Technology: Bluetooth Product Type: Mouse Scroller Type: Scroll Wheel Interfaces/Ports Pointing Device Host Interface: USB 2.1 Miscellaneous Device Supported: Computer Physical Characteristics Colour: Black Depth: 122.6 mm Height: 43.3 mm Weight (Approximate): 135 g Width: 77.6 mm