Hilitand Wireless Keyboard and Mouse Combo, Retro Typewriter Keyboard Mouse Set Ergonomic 75 Keys Round Keycaps, Optical Mouse 2.4GHz Connection for Computer Laptop PC(Green)

How to Use: 1. Open the back cover of the keyboard and the top cover of the mouse, and put the battery inside the keyboard and mouse in the correct direction. 2. Take out the USB receiver and insert it into the USB port of the computer device before use. Specification: Item Type: USB Keyboard Mouse Material: ABS Keyboard Specifications: Number of Keys: 75 Keys Battery: 2 x AAA (without) Interface: 2.4G Transmission Method: Wireless Rated Voltage and Current: 3.0V / ? 5 mA Mouse Specifications: DPI: 1600 Number of Keys: 3 Keys Battery: 1 x AA (without) Interface: 2.4G Transmission Method: Wireless Rated Voltage and Current: 3.0V / ? 50 mA Package List: 1 x Keyboard 1 x Mouse 1 x Receiver 1 x User Manual Note: Shipped Without Battery