Specifications are provided by the manufacturer. Refer to the manufacturer for additional explanations. Basic Product Type: Mouse Movement Detection: Laser Colour: Black Brand Name: HP Pointing Device Connectivity Technology: Cable Number of Total Buttons: 3 Pointing Device Host Interface: USB Scroller Type: Scroll Wheel Ergonomic Fit: Symmetrical General Information Product Type: Mouse Manufacturer Part Number: H4B81AA Manufacturer Website Address: http://www.hp.com Packaged Quantity: 1 Manufacturer: HP Inc. Product Name: 3-Button USB Laser Mouse Brand Name: HP Interfaces/Ports Pointing Device Host Interface: USB Miscellaneous Package Contents: 3-Button USB Laser MouseDocumentation Device Supported: Computer System Requirements: USB PortOperating Systems:Windows VistaWindows 7 Environmentally Friendly: Yes Environmental Certification: RoHS Physical Characteristics Weight (Approximate): 95.3 g Colour: Black Height: 37.3 mm Width: 62.7 mm Depth: 115.1 mm Pointing Device Movement Detection: Laser Movement Resolution: 1000 dpi Pointing Device Features: Contour Pointing Device Connectivity Technology: Cable Pointing Device Cable Length: 1.83 m Number of Total Buttons: 3 Scroller Type: Scroll Wheel Ergonomic Fit: Symmetrical Warranty Limited Warranty: 1 Year