works with two smartphones not (no Blauzahn connection) and takes place at two test vehicles no OBD. With the phones and the car was also tested against crosswise. I can only advise against the purchase, only the Power LED is on, but it is even too expensive. Then I've been waiting four weeks but because it is your own fault. Those who buy cheap, buy twice just often.
Conclusion: do not buy or make restitution with China - hihi.
EDIT a day later: unwinding initiated, money will be refunded.
