The Bluetooth audio receiver adopts -output (USB/AUX) interface design, bringing you to enjoy the of wireless music.Ordinary audio is instantly upgraded to Bluetooth audio, eliminating the need for complicated wiring. Mobile phone/computer Bluetooth wireless connection is more free and convenient.To connect the AUX interface device, you need to connect the USB.No need to install drivers Plug and play.Built-in enhanced antenna, no coverage, 10 meters transmission barrier-free.Type: Bluetooth AdapterBluetooth version: V5.3Bluetooth protocol: A2DPP AVRCPFrequency range: 2.402GHz-2.480GHzTransmission mode input: USB+AUXReceive mode output: USB+AUXWorking distance: about 10MWorking voltage: DC-5VColour:blackMaterial:ABSPackage Contents:1 x AdapterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.