B21 Bluetooth 5.0 Audio Receiver U-Disk RCA 3.5mm AUX Jack Stereo Music Adapter

• It can connect two devices, support to connect with 3.5mm audio port and 2 RCA audio port at the same time

• A built-in microphone for hands-free calls

• Simple button operations to answer/hang-up calls, switch songs and adjust volume

• Ultra-compact and lightweight for convenient use with a variety of devices

• Upgraded to support U Disk play

• No built-in battery, powered by USB

Specification: 

• Support devices: support two mobile phones to connect

• Bluetooth version: 5.0

• Output interface: 3.5mm stereo RCA left and right channels

• Function: support U disk, hands-free call, NFC connection

• Bluetooth protocol: AVRCP, A2DP

• Frequency range: 2400-2483.5MHz

• Frequency response: 20Hz-20kHz

• Output power: 28mW RL=16Ω

• Signal to noise ratio: >90dB

• Total harmonic distortion: <0.1%

• Forward transmission distance: 10 meters

• Power supply: Micro USB interface 5V power supply

• Size: 78*48*18mm