JOYROOM JR-CB2 Wireless Transmitter / Receiver 2 in 1

RX/TX transmitting & receiving 2-in-1 design, free switch between two modes Smart LED digital display, easy to check remaining capacity Built-in 300mAh battery, up to 14h battery life Latest BT 5.3 technology, low latency, stable connection within 30m Colorful LED ring, facilitates operation at night, safe for driving AUX/TF/BT multi-mode connection, satisfying different needs Independent control buttons, easy to play/pause music or answer/reject calls High temperature resistant 3M adhesive that can be removed, space-saving magnetic plate that suits anywhere Dual-mic ENC noise cancellation, accurately picks up human voice, clearer calling experience