Can connect audio/power amplifier/TV/earphone, and support simultaneous connection of two devices HIFI high definition sound quality and high fidelity transmission NFC Sensor Pairing Connection, built-in NFC sensor chip When the mobile phone is close to the sensing area, it will automatically connect Bluetooth 5.3 powerful chip does not delay or jam Wireless Music Streaming,Stereo stream music to non-Bluetooth headphones and speakers Name: Bluetooth Receiver 5.3 Bluetooth protocol: AVRCP, A2DP Range: 10m Interface: RCA interface/AUX audio interface Battery: 200mAh Charging time: 1.5 hours Signal-to-noise ratio: 90dB Output interface: 3.5mm/2RCA Charging interface: Type-C Color: Black material: plastic Package Contents: 1 x audio receiver 1 cord 1 x AUX audio cable 1 x RCA cable 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.