This product is a Bluetooth device that integrates receiving and transmitting. The product is easy to operate and can freely send and receive all audio signals. Through the product Bluetooth reception mode, the music in the mobile phone can be transmitted to the traditional home audio equipment; more convenient is through the product Bluetooth transmission mode, can make TV, CD player, MP3 or other audio source sent to the Bluetooth speaker or Bluetooth headset As the product uses low-latency technology, it also supports real-time transmission of online games, television, and movie sounds. This product has built-in rechargeable battery, long life, perfect solution to the limitations of audio devices, and expands the transfer function of various audio devices.