This 2.4GHz wireless remote controller is specially designed for easily controlling Smart TV, Android TV Box, PC and more devices. Plug and play, simple and convenient. It will bring you much convenience. 2.4G Wireless Connection: 2.4G wireless connection via USB receiver, plug and play, enjoy long-range wireless control up to 10 meters Voice Control: Press the voice button on the remote control to search for the channel you want to see, easy and convenient to use Ergonomic Design: Arc design at the back of the air mouse, perfectly fits your palm, providing comfortable handheld experience Convenient to Use: 17 keys air mouse, easy to control volume, page up / down, Mouse left / right, etc. Just sit back on your couch and enjoy Wide Application Range: Suitable for Smart TV, Android TV Box, all-in-one PC, laptop, projector and so on Specifications: Material: Plastic Frequency range: 2.403GHz-2.480GHz Key numbers: 17 Operating distance: Up to 10 meters / 30ft Battery: 2 * AAA (not included) Main Item Size: approx. 14.4 * 4.5 * 2.4cm / 5.66 * 1.77 * 0.94in Main Item Weight: approx. 48g / 1.69oz Note: This voice remote control can't work with for Xiaomi Mi box, TX3 mini,(S905W) Magicsee N5 TV box and smart TV. The keyboard is not compatible with some smart TV, for example, when it uses for LG or for Samsung brand smart TV, only partial key function can work, so don't suggest to use for LG or for Samsung, etc. smart TV. Voice control function can only be used on the TV box for Google voice assistant. The AAA batteries are not included, you need to buy two by yourself. For Smart TV or Smart Projector users, before purchasing, please make sure that your TV or Projector can be connected to a mouse and use normally (can test using a mouse).