Specifications are provided by the manufacturer. Refer to the manufacturer for additional explanations. Basic Product Type: Mouse/Presentation Pointer Movement Detection: Optical Colour: Iron Grey Brand Name: Lenovo Pointing Device Connectivity Technology: Wireless Pointing Device Wireless Technology: Bluetooth/Radio Frequency Number of Total Buttons: 4 Pointing Device Host Interface: USB Scroller Type: Touch Scroll General Information Product Type: Mouse/Presentation Pointer Manufacturer Part Number: GY50U59626 Manufacturer Website Address: http://www.lenovo.com Manufacturer: Lenovo Group Limited Product Name: YOGA Mouse with Laser Presenter Package Type: Retail Product Line: YOGA Brand Name: Lenovo Interfaces/Ports Pointing Device Host Interface: USB Physical Characteristics Weight (Approximate): 60 g Colour: Iron Grey Height: 14 mm Depth: 57 mm Pointing Device Movement Detection: Optical Movement Resolution: 1600 dpi Pointing Device Connectivity Technology: Wireless Pointing Device Wireless Technology: Bluetooth/Radio Frequency Number of Total Buttons: 4 Scroller Type: Touch Scroll Wireless Operating Frequency: 2.40 GHz