Specifications are provided by the manufacturer. Refer to the manufacturer for additional explanations. Basic Product Type: Mouse Movement Detection: Optical Colour: Cyan Blue Brand Name: Microsoft Pointing Device Connectivity Technology: Wireless Pointing Device Wireless Technology: Radio Frequency Number of Total Buttons: 3 Pointing Device Host Interface: USB 2.0 Scroller Type: Scroll Wheel Ergonomic Fit: Symmetrical General Information Product Type: Mouse Manufacturer Part Number: U7Z-00059 Manufacturer Website Address: http://www.microsoft.com Manufacturer: Microsoft Corporation Product Model: 1850 Product Name: Wireless Mobile Mouse 1850 Product Line: Wireless Mobile Brand Name: Microsoft Interfaces/Ports Pointing Device Host Interface: USB 2.0 Miscellaneous Device Supported: Computer Country of Origin: China Environmentally Friendly: Yes Physical Characteristics Weight (Approximate): 89.9 g Colour: Cyan Blue Height: 38.4 mm Width: 58.2 mm Depth: 100.3 mm Pointing Device Movement Detection: Optical Movement Resolution: 1000 dpi Pointing Device Connectivity Technology: Wireless Pointing Device Wireless Technology: Radio Frequency Number of Total Buttons: 3 Scroller Type: Scroll Wheel Ergonomic Fit: Symmetrical