Good construction and easy installation. It's very useful that they include a surface cleaning kit for the base to stick. Recommended for iPhone with a magnetic case so that putting it in and taking it out is easier and the device is more secure in the base. However, if you have another device, a metal plate is provided to put in any case you want and have the same conveniences as the iPhone. The arm of the base makes a difference as you can adjust the height while the base rotates for better viewing. The arm sways over any bumps but does not lose its position. The device remains very stable. A main negative for me is that my windshield has a steep angle which means that the base is exposed to the sun when I drive in the morning and of course, if I use my phone, it heats up too. It has to do purely with the car. The product is excellent after 1 month of use.