1、Built-in HD microphone, allowing you to chat with friends or enter words by voice. Note that the voice search function cannot be used across applications. Only applicable to built-in voice input search box or application. 2、Support sensing the direction and speed changes, so you can just move your hand to control. 3、2.4GHz wireless connection with a USB receiver, plug and play, with remote controlling range up to 4m/13.2ft. 4、Adopt high quality material and exquisite workmanship, stable performance, reliable to use. 5、Comfortable hand feeling, convenient to use, allowing you to control your device more easily. Item Type: Remote Controller Condition: 100% brand new Color: Black Material: ABS USB Receiver Transmission Rate: 250Kbps Operating Frequency: 2400.0MHz-2483.5MHz Output Power: -18dbm-0dbm Function: HID compatible device USB audio microphone device Controller Transmission Rate: 250Kbps Operating Frequency: 2400.0MHz-2483.5MHz Output Power: -18dbm-0dbm Function: 2.4G voice remote control Battery Type: 2 x AAA batteries (NOT included) Battery Capacity: 300mAh Supported Systems: For Linux/Android 2.X/Android 4.X/Win 2000/Win Vista/Win7 32/Win7 64/Win8 32/Win8 64/MAC OS X 1 x Remote Controller 1 x Bluetooth Receiver 1 x User Manual