Specifications: 1. Upgraded to support U Disk play. 2. Auto On When you connect to the power, So its very good for to use in car or other you want it have auto on functions. 3. Connect two devices: Support to connect with 3.5mm audio port and 2 audio port at the same time. 4. Super Stable Connection: Our Bluetooth audio adapter is fitted with a Bluetooth 5.0 chip for steady pairing, fast transmission and a wide signal range (33 feet). 5. With the 3.5mm AUX port and 2 port, it can be connected to non-Bluetooth car audio systems, home stereo, wired headphone/speaker, Amplifier/Home Theater.etc. Description: Power supply parameters: DC 5V Product Name: NFC Bluetooth Adapter Bluetooth version: 5.0 Interface type: AUX RAC U disk Transmission distance: barrier-free 15 meters Remote control support: infrared remote control Music format: MP3/APE/FLAC/WAV/WMA Supported equipment: mobile phone/tablet/computer/speaker/amplifier, etc. Material: Aluminum alloy colour: black Package Contents: 1 x Wireless Bluetooth receiver 1 x AuX Cable 1 x DC Cable 1 x Remote Only 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.