Description: Wired to wireless:via the 3.5mm AUX adapter,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 for stable connection ,fast transmission and wide signal range,low delay Can be used in car bluetooth adapter,talking, navigating, and listening to songs are correct, and driving is safer Rich interfaces to meet the needs of various equipment,with button operation, simple and convenient Support tf card playback, no need to drive, plug and play,with strong signal, stable transmission of 10 meters, no lag Specification: Model: C39s Interface: 3.5/TFka Whether plug and play: plug and play External power supply: no external power supply Transmission rate:100 Effective working range:10m Bluetooth standard: 5.0 Working frequency: 2400 Power supply:DC5V/1A Material: Plastic Size Chart: 69X69X23.5mm/2.72X2.72X0.93inch Package Includes: 1 Piece Bluetooth Adapter 1 Piece Lotus Head Audio Cable 1 Piece User Manual 1 Piece 3.5mm Audio Cable 1 Piece Charging 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!