I'm very satisfied. The price may be higher than other Chinese manufacturers, but I think it's worth the extra cost. I can't compare the quality of their products. One thing I know is that their service is excellent. You can always count on their help, and the assistance is immediate and professional, just like with others. I would only change the mounting method so that the device can be quickly removed, like the BMW version. I would also consider designing a steering wheel remote control for the ADV. I highly recommend it.










