Bluetooth 5.0 Transmitter Receiver Wireless 3.5mm AUX NFC To 2 RCA Audio Adapter Features: Bluetooth 5.0 Version: Conforms to version 5.0 specifications, backward Bluetooth 4.2 / 4.1 / 4.0 / 3.0 / 2.0 / 1.0. Support Bluetooth Hands-free Calling: When in Bluetooth receiving mode, support incoming call answering/hanging up, etc. Support NFC: Built-in chip, you can directly connect with NFC mobile phone or other Bluetooth devices that support NFC by touching this receiver. Support Audio Ports for Connection: 3.5mm and 2RCA audio ports are included, suitable for more devices (including 3.5mm cables and 2RCA cables). Remote Wireless Connection: The wireless Bluetooth adapter supports a connection of up to 15 meters/49 feet, and can control long-distance music playback. Support USB Playback: Plug and play, music can be played without Bluetooth connection, and music can be played by plugging in USB Support Automatic Opening/Closing: Use the charger cable to connect the car/other power sources, start the car, or power on, it will automatically turn on and automatically connect to the last connected device. When the car is turned off, it will automatically turn off. Product Description: Bluetooth Version：V5.0+EDR Interface：Atereo analog/AUX3.5mmt Frequency Response Range：10Hz-20KHz Output Impedance：75Ω Effective Distance：15 meters Package included： 1x NFC BT19 5.0 Audio Transmitter 1x 3.5mm Aux Cable 1x User Manual 1xAV Audio Cable 1xtype-c Charging Power Cord