Specification: Item Type:USBKeyboardMouse Material: ABS Number of Keyboard Keys: 68 Keys Number of Mouse Keys: 3 Keys Connection Mode: 2.4G Support System: For Wih Xp, for Win7, for Win8, for Win10 Keyboard Battery: 2 x AAA Batteries (not included) Mouse Battery: 1 x AA Batteries (not included) How to Use: Useafterconnection Package List: 1 x Keyboard Mouse 1 x Keyboard Mouse 1 x 2.4G Receiver 1 x User Manual Note: Shipped Without Battery