Functions: Bluetooth 5.0, Bluetooth receiving, AUX input, Bluetooth calling, smart one-to-two, long-lasting battery life. Widely compatible with plug-and-play, audio devices with AUX input interface can be used, automatically connect to mobile phones, Bluetooth 5.0 version, higher transmission efficiency, safe navigation without delay, built-in clear call microphone, support Bluetooth call function, suitable for wired headsets, car Audio. Upgrade the old audio to the Bluetooth audio wired headset to upgrade the Bluetooth headset, match the 3.5mm plug headset with the Bluetooth function, barrier-free transmission and listening to music is more convenient, lossless decoding, binaural immersion. The 10-meter long-distance transmission is continuous, and you can listen to it in the corner and enjoy the fun of freedom. You can connect two mobile phones/tablets/Bluetooth headsets to switch back and forth at the same time, and you can use it freely.