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. Builtin AEC echo cancellation and ANC noise cancellation circuit, gorgeous stereo sound, more pure sound quality.4. Builtin 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 percent Brand New Item Type: For Bluetooth AdapterFor Bluetooth: 5.0 Support protocol: A2DP, AVRCP, HFP, SPP HIDReceiving Working Current: 43MATransmitting Working Current: 60MAStandby Current: 18MABuilt-In Battery: Polymer 600MAHCharging Current: 300MALife Time: 8HFor Bluetooth Distance: 10M (open place)Charging Method: Micro USB 5V or 0.5AOutput Connection Mode: 3.5MM stereo interfaceInput Connection Mode: 3.5MM stereo interfaceCompatible: 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