Specifications are provided by the manufacturer. Refer to the manufacturer for additional explanations. Basic Product Type: Mouse Movement Detection: Optical Colour: Wool Blue Brand Name: Microsoft Pointing Device Connectivity Technology: Wireless Pointing Device Wireless Technology: Radio Frequency Pointing Device Host Interface: USB Ergonomic Fit: Symmetrical General Information Product Type: Mouse Manufacturer Part Number: U7Z-00015 Manufacturer Website Address: http://www.microsoft.com Manufacturer: Microsoft Corporation Product Model: 1850 Product Name: 1850 Mouse Brand Name: Microsoft Interfaces/Ports Pointing Device Host Interface: USB Physical Characteristics Weight (Approximate): 89.9 g Colour: Wool Blue Height: 38.1 mm Width: 58.4 mm Depth: 99.1 mm Pointing Device Movement Detection: Optical Pointing Device Connectivity Technology: Wireless Pointing Device Wireless Technology: Radio Frequency Ergonomic Fit: Symmetrical