take bluetooth 4.0 protocol, compatible with 2.0 3.0 4.0 other versions of bluetooth protocol Can support common MP3 format audio, and also support WMA, WAV, FLAC, and other high quality audio format decoding, ordinary bluetooth function Can support DSD capacity transmission,The data transmission speed between devices is stable and faithful. Designed for music enthusiasts Bluetooth version: 5.0 Product voltage: 5-12V Project Type: Bluetooth Car Kit Features: Bluetooth audio adapter cable Allows you to connect to an external audio source; you can stream from your smartphone to your car audio; Pair your phone with our Bluetooth module and select Aux from the radio. You can enjoy the music played on your phone through the car speakers. Applicable to all Bluetooth enabled PADs. Bluetooth module connector: 12V Red cable: 12V (positive) Black cable: 12V - (negative) Cable length: about 25 cm Core material: tinned copper wire Number of cores: 6 Colour:black Material:plastic Size:7*3cm Package Contents: 1*Audio Adapter Cable Only the above package content, other products are not included. Note: Light 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.