Description: Wired to Wireless: via the 3.5mm AUX adapter(receiver/transmitter), chenge the wired into wireless,can be connected to non-bluetooth equipment,say goodbye to wire shackles and enjoy wireless life Bluetooth 5.0 Chip: stable connection ,fast transmission and wide signal range,low delay Widely Use: Can be used in car bluetooth adapter,talking, navigating, and listening to songs are correct, and driving is safer Easy to Use: Rich interfaces to meet the needs of various equipment, with button operation, OLED display simple and convenient Plug and Play: No need to drive, plug and play,with strong signal, stable transmission of 10 meters, no lag Specification: Model: B38 Interface: SPDIF AUX Whether plug and play: plug and play External power supply: no external power supply(rechargable) Effective working range:10m Bluetooth standard: 5.0 Battery using tome: 20h Material: Plastic Size Chart: 58x58x20mm/2.28x2.28x0.79inch Package Includes: 1 Piece Bluetooth Adapter 1 Piece Optical Cable 1 Piece 3.5mm Audio Cable 1 Piece USB Charging Cable 1 Piece User Manual 1 Piece 3.5mm Male to RCA Male Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!