​NFC Wireless Bluetooth Adapter Specification: Item Type: NFC Bluetooth Receiver Material: ABS Bluetooth Version: 5.0 Transmission distance:≤10M Audio interface: 3.5 + 2RCA Item Size: 60 * 60 * 20mm Package List: 1 * NFC Bluetooth Receiver 1 * 3.5MM Audio Cable 1 * 2RCA Audio Cable 1 * Charging Cable 1 * User Manual Supports NFC: Built-in chip, you can connect with the NFC mobile phone or other support NFC Bluetooth device directly by touching this receiver. Playing Music on 2 Speakers Simultaneously: With both 3.5mm and 2RCA 2 kinds of connection options, you can enjoy music on 2 speakers simultaneously. Support dual audio port to connect: Come With both 3.5mm and 2RCA audio port, suitable for more devices (3.5mm cable and 2RCA cable included). Long-Range Wireless Connection: The effective distance up to 10 meters/33 feet, controlling the music playing in a long distance. Support Auto TURN ON/OFF: Using the charger cable connect to your car or other power, when start the car or it have power, it will auto turn on, and automatically connect to the device which you last connected. When the car turned off, it will auto turn off.