take bluetooth 4.0 protocol, compatible with 2.0 3.0 4.0 other versions of bluetooth protocolCan support common MP3 format audio, and also support WMA, WAV, FLAC,and other high quality audio format decoding, ordinary bluetooth functionCan support DSD large capacity transmission,The data transmission speed between devices is stable and faithful.Designed for music enthusiastsBluetooth version: 5.0Product voltage: 5-12VProject Type: Bluetooth Car KitFeatures: Bluetooth audio adapter cableAllows 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: 12VRed cable: 12V (positive)Black cable: 12V - (negative)Cable length: about 25 cmCore material: tinned copper wireNumber of cores: 6Colour:blackMaterial:plasticSize:7*3cmPackage Contents:1*Audio Adapter CableOnly 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.