1. Brand new and high quality.
2. Material: copper
3. Suitable for Audi have the AMI interface,pleaes you check your car have the AMI Interface)A1/A3/A4/A5/A6/A7/A8/Q3/Q5/Q7RS4/RS5/RS6/RS7/RS Q3/S5/S3/S4/S5/S6/S7/S8/A6L/A8L/Q7/A3/A4L
4. Bluetooth name: JieRui-BT 5908
5. Bluetooth version: 5.0
6. Voltage: 5-12V