Color:Black;Model Number:MX3; Material:Plastic & Silicone Transmission and control: 2.4G RF wireless radio frequency technique. Sensor: 3-Gyro + 3-sensor;Amount of key: 81 (The Keyboard consists of 38 Keys); Battery Type: 2 * AAA batteries (Not Include) Item size: 16.5 * 5.5 * 1.9cm / 6.77 * 2.2 * 0.7in; Item weight: 94g / 3.32oz Package List:1 * Multifunctional USB 2.0 2.4GHz wireless remote control keyboard; 1 * USB2.0 Receiver Adapter; 1 * User Manual (English) Full keyboard, air mouse and TV remote. 2.4G wireless transmission, the distance is up to 10m. With included USB 2.0 Receiver Adapter, Supports plug and play, no need to install software. It is specially designed for Android system to realize human-computer interactions comprehensively. Motion sensor allows mouse to be controlled by waving the remote. This multifunctional USB 2.0 2.4GHz wireless remote control keyboard which consists of 81 keys integrates the wireless keyboard, air mouse and remote controller. It is specially designed for Smart TV, Android TV box, mini PC, HTPC, etc. Its compact portable design for easy carrying, and it is widely applied to home, school, travel or any other working environment. Working Power: Less than 10mA in the working condition without voice. Standby Power: Microampere, almost no power, in line with the European “Energy Star” environmental standard.