How to Use:After the mouse is installed with batteries (not included). After using the mouse receiver to plug into the device USB port, turn on the power switch at the bottom of the mouse, the mouse automatically connects to the device, plug and play, no driver required. Specification: Item Type: Wireless Optical Mouse Material: ABS Operating Frequency: 2.4GHz Wireless Distance: Approx. 10meter / 10.9yd Resolution: 800, 1600 DPI Keys: 6 Keys Battery: AAAx2 (Battery Not Included) Applies To: For Windows 95, for Windows 98, for NT, for ME, for Win 2000, for XP, for Vista, for Windows 7, for Win8 Package List: 1 x Wireless Mouse 1 x USB Receiver