Bluetooth 5.3 Audio Transmitter Receiver 3.5MM AUX HiFi Music Wireless AdapterFeatures: The product transmits and receives 2-in-1 function. Built-in battery, long-lasting life. AUX interface connection, audio input and output. Support HD call function, answer/hang up. 5.3 high configuration Bluetooth version, not easy to jam. Enhance the function of Bluetooth connection for all kinds of cars, stereos, TVs, tablets, desktop computers and so on. Made of zinc alloy material shell, ABS material forging and moulding, durable quality assurance. Power on and connect automatically. Working voltage:5V Bluetooth version: 5.3 Bluetooth transmission distance: 5 metres Bluetooth microphone effective distance:0.5-2 metres Connection mode: AUX connection input, output Battery capacity:120 mAh Function: transmit/receive/talk etc Notes: 1. Connecting Bluetooth does not support automatic music playback, you need to manually point to play. 2. During the call, or Bluetooth music sound is not loud enough, please manually adjust the volume of the product to the maximum. 3. Do not use the product in high temperature, dusty or humid environment. Product list: Bluetooth adapter*1 Charging cable*1 Manual *1