1. Curved base design fastens to most car dashboards. With a non-slip silicone pad, it does not scratch your car and phone. 2. One-hand operation makes it easy to install, no tools required. The 360-degree rotation system allows you to change the angle as you like. It will not harm any smartphone. 3. It can hold your devices precisely and tightly. The holder is washable and reusable, with a beautiful stone pattern design.