Features:1. Support audio equipment with audio input: realize wireless audio reception and transmission.2. Support automatic search to connect Bluetooth devices: realize transmission wireless audio transmission.3. Built-in AEC echo cancellation and ANC noise cancellation circuit: gorgeous stereo, the sound quality is more pure and beautiful.4. Built-in enhanced signal transmission circuit: fast and stable connection, continuous sound.5. Compatible: dual lossless audio format.6. Support: AUX OUT, Earphone.7. Automatic memory connection function: simpler operation and more convenient connection.8. Built-in battery: long battery life.9. Bluetooth 2.1: low power consumption.10. Real voice prompt: simple and clear operation.11. Smart compatibility: Android, IOS system mobile phone and PAD, and all Bluetooth audio devices.12. Support: Connect 1 mobile phone.13. Simple product connection: no cumbersome driver and download APP.1. Embedded ARM926EJ-S core, 4KB lcache and 4kB Dcache.2. Support stereo codec.3. Support HFP, HSP, A2DP, AVRCP, and SPP configuration files.4. Noise reduction and echo cancellation.5. Multi-band equalizer configuration.6. Support packet loss concealment.