Mouse -Wireless Optical Mouse Highlights Generic Brand Wireless Optical Mouse Description: 2.4GHz wireless mouse with arc bridge design. When you're on the move, the Arc Mouse folds down to 60% of its fully expanded size. Compatible with / Microsoft Windows 8 / Windows 7 / Windows XP / Vista. Optical positioning, precise and reliable. Plug and Play, no need to install additional drivers. Specification: Working Range: 8-10m Built-in USB Receiver Resolution: 1600dpi Ergonomics: Stand Open Size: Approx. 113 x 58 x 28mm / 4.45 x 2.28 x 1.10 inch Folded size: approx. 78 x 58 x 30 mm / 3.07 x 2.28 x 1.18 inch Alkaline battery: AAA x 2 pieces (battery not included) After being folded, the mouse closes automatically and can be easily carried in your bag. Package includes: 2pcs wireless mouse Note: Need to plug in the included USB receiver when using the mouse.