Feature: 1. Support audio equipment with audio input to realize wireless audio reception and transmission. 2. Supports automatic search and connection of for Bluetooth devices to achieve wireless audio transmission. 3. Built‑in AEC echo cancellation and ANC noise cancellation circuit, gorgeous stereo sound, more pure sound quality. 4. Built‑in enhanced signal transmission circuit, fast connection, more stable and continuous sound. 5. Compatible with dual lossless audio formats, support AUX OUT, earphone. 6. Automatic memory connection function, simpler operation and more convenient connection. 7. Built-in battery, long battery life, human voice prompt, simple operation. 8. Smart compatible for Android, for IOS system mobile phone and for PAD, and all for Bluetooth audio devices. Specification: Condition:100% Brand New Item Type: For Bluetooth AdapterFor Bluetooth: 5.0 Support protocol: A2DP, AVRCP, HFP, SPP HID Receiving Working Current: ≤ 43MA Transmitting Working Current: ≤ 60MA Standby Current: ﹤18MA Built-In Battery: Polymer 600MAH Charging Current: 300MA Life Time: ﹥8H For Bluetooth Distance: ﹥10M (open place) Charging Method: Micro USB 5V/0.5A Output Connection Mode: 3.5MM stereo interface Input Connection Mode: 3.5MM stereo interface Compatible: for Android, for IOS system mobile phones and for PAD, and all for Bluetooth audio equipment, audio equipment with audio input interface.. Package List: 1 x Adapter1 x Manual1 x Charging Cable1 x RCA Line1 x Audio Line