Product Material: ABS + electronic components Size: 14.3*8.9*1.85cm Screen size: 5.3 inches Receiver: Nano style Connection port: USB 2.0 or higher Transmission mode: GFSK 2.4 GHz wireless, up to 10 meters Transmission frequency: 2400-2483MHZ Transmission power: less than + 4bd Power supply: rechargeable lithium ion battery Charging voltage: 4.4 V-5.25 V Charging current: 300 mA Working current: 15 mA (vibration off) Sleep current: 20uA Colour: Black Quantity: 1 piece Package content: 1*wireless keyboard, 1*charging cable, 1*charging adapter, 1*instruction 1. Plug and play within 10M: The wireless keyboard remote control with USB signal receiving port, the USB receiver is a standard HID device. Once connected, the device receives the signal and data from the transmitter. It works well with PC, laptop, etc. 2. 4-in-1 design: remote control, mouse, keyboard and touchpad are combined in one device, which is very practical and efficient. 5.3 inch touchpad, highly sensitive smart touchpad, comparable to the real notebook touchpad, function including mouse movement, left mouse button, right mouse button and mouse scroll wheel. English layout keyboard, you can use it for email, chat, remote control, message input and games. 3. With a rechargeable lithium battery: The keyboard can be charged with the supplied USB cable. Please only use approved USB and charging cables. Please charge the device fully before using it for the first time. The device can be used while charging, but the charging time is increased. When the battery is low, the LED indicator will flash. The device switches off automatically when the battery is empty. is practical and environmentally friendly. 4. Sleep mode and alarm mode: If there is no operation for more than 3 minutes, the keyboard switches to sleep mode. In the idle state, all LED displays are switched off. It can be reactivated by pressing any key. 5. Small and portable: Ergonomic design and innovative shape, portable and elegant. The wireless keyboard is small and portable and can always be carried in a pocket backpack.