Specifications: Wireless Connection: 2.4GHz Working Distance: 33 ft Keyboard Dimensions: 17.08 X 5.28 X 0.93 inches (43.4 X 13.4 X 2.35 CM) Keyboard Weight: 16.22 ounces (460G) Keyboard Keys: 106 Keys Mouse Dimensions: 4.02 X 2.44 X 1.54 inches (10.2 X 6.2 X 3.9 CM) Mouse Weight: 1.69 ounces (48G) Mouse Keys: 3 Keys Mouse DPI: 1600 Batteries Are Not Included Battery: 1 X AA for Keyboard, 1 X AAA for Mouse Only need one USB receiver to connect the keyboard and mouse, saving you USB interface. The bottom of the keyboard is equipped with adjustable height legs, allowing you to adjust the most comfortable typing angle. How to Pair the Keyboard and Mouse: 1. Take out the USB receiver and plug it into the USB interface of the computer 2. Insert 1 AA battery into the keyboard and 1 AAA battery into the mouse, then you can use Package Contents: 1 x Wireless Keyboard 1 x Wireless Mouse 1 x USB Receiver 1 x User Manual