Voice input: Built-in microphone allows voice chat or word input. Note that voice search function is limited to built-in search fields or apps and does not support external applications. 3-in-1 Air Remote Mouse: Combines 2.4G air mouse, 6-axis gyroscope, and IR remote learning functionality. Wireless connection: 2.4GHz wireless via USB receiver, plug and play, enabling long-range control up to 10 meters. Convenient operation: 18-key remote with easy access to volume control, page navigation, left/right mouse functions, and more. Wide compatibility: Works with most Android devices featuring USB input, including Smart TVs, Android TV boxes, mini PCs, and HTPCs. Supported systems: Linux, Android 2.x, Android 4.x, Windows 2000, Windows Vista, Windows 7 (32/64-bit), Windows 8 (32/64-bit), macOS X. Note: Requires 2x AAA batteries (not included).