100% high-quality new products. This product is specially made for car audio/stereo. Just connect power to battery and plug two into car radio,connect your phone with bluetooth. You can just Insert this item to back radio then Connect red wire to 12V+, the black wire to 12V-. Choose AUX from your radio and you can from your phone in your car. Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to through car speakers;You can hear music from your phone/pad/mp3(They should have blueooth function). Set up with auto-pairing in a minute. Existing CD changer can still be used. Function via Bluetooth-enabled devices. Condition: Plug & Play Bluetooth: V5.0 Range: 10m Suitable for most cars Installation : 1. Connect red wire to 12 volt ignition power 2. Connect black wire to ground/metal chassis 3. Connect to inputs of source device 4. Go to phone and pair it 5. Ready to go Colour:Black Material:ABS Package Contents: 1 x Bluetooth Adapter Cable Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.