This is bluetooth module is made specially for BMW vehicles.Compatitible with 09/2002 or newer BMW E46 3 Series Business CD head units ONLY (E46 with SA 661/650) Easy to install: 1.Insert the Black 10pin connector to the radio 2.Connect the red wire to 12V+, the black wire to 12V- 3.Pair your phone or pad with bluetooth module. 4.Choose Aux from your radio 5.You can use your phone to play music through car speakers. Cable length:25cm. High quality!!! About Payment:We accept Paypal only. About shipping:We send the goods in 1 working day after received your payment.Monday to Friday.(Beijing Time)We ship worldwide,if your country is not in the list,pls contact us freely.We are happy to help you.Normally it takes 7-15 working days for E-packet shipping to US.Some items we ship from US by USPS and it takes 2-5 working days to reach your hand.It takes 30-40 working days for Ecomonic Int'l Shipping to worldwide.For Working days,the weekends are excluded.Pls be enough patient with the shipping time!If you can not wait,you can ask for sending by DHL/FEDEX/UPS,etc,just pay a little more freight. About return:Some times the product may be damaged in transportation or we sent the wrong items to you.Pls send us pictures and you will get refund.Pls don’t leave negative/neutral feedback without contacting us.There will be many ways to solve any problems. Enjoy the shopping in our store!