Type: Bluetooth Car KitApplicable models:For all types of rear-mounted CD players, such as , Pioneer, and other navigation machines.car has a stereo with AUX IN lotus female connector, which can be plugged in with the RCA male connector to realize Bluetooth music.Bluetooth name: JieRui-BT 5908Bluetooth version: 5.0 (compatible with the following versions)Product voltage: 5-12V Length: 23cmYou can just Insert this item to the back radio then Connect the red wire to 12V+, the black wire to 12V-.Note: It is suitable for 5-12V voltage, the maximum should not 14V, otherwise the voltage will be too high when the device is powered on and the chip will burn out.Match your phone or pad to bluetooth module.and 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).Colour:blackMaterial:ABSPackage Contents:1 x Bluetooth AUX Audio CableOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.