Item Type: NFC Bluetooth ReceiverMaterial: ABSModel: BT200Bluetooth: Bluetooth5.0Distance: Approx. 15m / 49.2ftPower Supply: DC5VFunction: Support NFC Near Field PairingPackage List1 x Receiver 1 x Audio Line1 x RCA Line1 x Data Line 1 x Manual1Support USB playback, plug and play, you can play songs freely without internet. 2This is a smart compatible audio device that supports all devices with audio interfaces. 3Support NFC mobile devices for tap connection, no need to manually connect, just touch the button to connect to the NFC function. 4It is an NFC bluetooth audio receiver, which is easy to use and saves the trouble of wiring. 5Upgrade to a bluetooth speaker, just plug in the speaker or the AUX port of the amplifier, and then you can connect to play.