Here is my experience about the product:
The workmanship is very good, the materials seem rather high. The attachment to the windshield is easy. Stick to a good position and turn it so that you have a good look at the phone and press the bracket firmly to the little disc and set the lever. Positive is worth mentioning that the bracket is very flexible due to the spherical head and so you can adjust the right angle in all directions in order to have an optimum angle to your smartphone. I think that's very important, because otherwise reflects the display or the display contrast becomes poor. The grip is sufficient. In my tests over several days she kept firmly on the wheel.
Also well resolved is the way to make the mountings for the bottom of the smartphone displaced. Because some smart phones have the USB port in the center, while others left or right. So you can individually adjust for its smartphone the lower brackets in order to plug the USB cable without problems. The holder is designed for smart phones up to a width of max. 76 mm suitable, which should be sufficient for most devices. The smartphone is inserted into the holder and compressed the lateral holders. On the inside the brackets are provided by rubber, so that the smartphone would collect no scratches. This smartphone remains firmly in the bracket. It is unlocked by clicking the side button.
Conclusion: Anyone for a "small" money (! Stop but are much more expensive mounts) will have a simple, functioning and well thought-holder, in which the processing and quality is right, you should consider purchasing here.