Bluetooth 5.0 Version Complies with version 5.0 specifications and is backward compatible with Bluetooth 4.2/4.1/4.0/3.0/2.0/1.0 Support NFC Built-in IC chip, you can directly connect to NFC mobile phone or other devices with NFC Bluetooth function by touching this receiver Support Dual Audio Port Connection Comes with 3.5mm and 2RCA audio ports, suitable for more devices (including 3.5mm cables and 2RCA cables) Remote Wireless Connection The wireless Bluetooth adapter supports a connection of up to 10 meters/33 feet, and can control music playback remotely Support Automatic On/Off Use the cable to connect to the car/other power source, when you start the car or its power source, it will automatically turn on and automatically connect to the device you connected last time. When the car is turned off, it will automatically turn off Specifications: Size: 6*6*2cmMaterial: ABSBluetooth: Bluetooth 5.0Distance: 10mWorking power supply: DC5VCompatibility: All Bluetooth audio devices support A2DP/AVRCP/HFP protocolsFunction: Supports NFC and simultaneous connection of 2 Bluetooth devices