Feature:1. It can be inserted into a computeand projector, connected to a speaker, and the sound can be played through the speaker.2. The 5.0 smart chip is used to ensure stable signal, fast operation, and no delay or stalling in transmission.3. The lossless algorithm design can restore more sound quality details and bring an immersive feeling.4. Support AVRCP control, you can play the PC player through the speaker and headphone.5. The built in antenna enhances the signal and can realize long distance transmission without obstacles of 10m / 32.8ft.How to Use:Plug and play.Specification:Item Type: AdapterMaterial: ABSColour: BlackModel: B12Bluetooth Version: 5.0Bluetooth Protocol: A2DP, AVRCP, HFPInput Voltage: DC / 5VTransmission Distance: Approx. 10m / 32.8ftScenes to Be Used:1. The Computer Pushes the to the Speaker Headset Via Bluetooth, or Uses the Speaker Headset for Voice Chat or Call or Conference Call;2. In the Teleconference System, It is Equivalent to Omit the Microphone Cable of the Traditional Telephone System and Make the Microphone Part Wireless.3. In the Family Living Room Scene, the Sound of the Tv is Transmitted to the Speaker or Earphone Through the Dongle. Package List:1 x Adapter1 x Manual