Description: 1. Voice control function can only be used on the TV BOX with Google Voice Assistant. 2. The AAA batteries are not included, you need to buy two by yourself. 3. 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). 4.Only power button can be programmed for IR learning 5.If you use the Voice remote control on android tv box. Install "google assistant" Specifications: How to use: Plug the USB receiver into the USB port of the device being operated. For the first use, wait 20-60 seconds until the USB receiver driver is successfully installed. Flick the mouse and the cursor will move on the screen, which means the pairing is successful. If the pairing is unsuccessful, first press and hold the "0K" key. Then press the "return" button, the red indicator light starts to flash. When the red indicator light stops flashing, the pairing is successful. Package Included: 1*G50S Air Mouse 1* Receiver 1*User manual Note: 1. Voice control function can only be used on the TV BOX with Google Voice Assistant. 2. The AAA batteries are not included, you need to buy two by yourself. 3. 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). 4.Only power button can be programmed for IR learning 5.If you use the Voice remote control on android tv box. Install "google assistant"