2-in-1: In TX mode, the Bluetooth transmitter plugs into non-Bluetooth devices such as TVs, MP3 players, computers, etc. through AUX and RCA jacks, and transmits sound to Bluetooth headsets, Bluetooth speakers; In RX mode, Bluetooth Receiver The receiver can connect to wired speakers, car audio inputs, home theater receivers and receive audio from smartphones via Bluetooth. APTX: Bluetooth 5.0 with built-in CSR chip, supports Aptx, Aptx LL, extremely low latency, minimizes voice delay, allowing you to enjoy perfect synchronization and CD-like sound. Stable Connection: The Bluetooth adapter supports a Bluetooth transmission distance of 230 feet long, the transmission range covers the entire room, and the sound is loud; you can hear it upstairs, downstairs, in the kitchen, garage, balcony and even in the yard. Dual pairing mode: In TX mode, you can connect two Bluetooth speakers or Bluetooth headphones at the same time, and the speakers or headphones can ring at the same time; In RX mode, you can connect two Bluetooth-enabled mobile phones at the same time. Rechargeable: 3 hours charging time. It can be used continuously for 8 hours when fully charged. It supports charging while working, so you don't have to worry about power issues. You can plug in the power while you work. This mode can avoid frequent charging problems. Colour:Black Material:Plastic Package Contents: 1 * Converter 1 * Power cord 1 * Lotus cable 1 * 3.5mm audio and video cable 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.