Specifications:Connection method: WiredWork mode: Optical DPI: max. 1600 (adjustable)Connection port: USB Suitable for: NotebookWorking voltage: DC 5VKey number: 6 keys.Function: forward/backward、 roll、 right/left button.Material: ABSColor: Black、 Purple、 Blue、 GraySize: approx. 10.5*7.3*7.9 cmCable length: approx. 1.4mPackage Content:1 x Ergonomic Vertical USB Mouse