The Baseus Tank Gravity is a car phone holder designed to secure your device on the dashboard or windshield using a reliable suction base. It utilizes a gravity linkage mechanism, which means the side arms automatically close and lock your smartphone in place simply by relying on the weight of the device as you set it in. Constructed from a combination of metal alloy and durable plastic with a black tarnish finish, this holder is built for stability. To keep your screen and body safe from marks, the contact surfaces are lined with soft rubberized padding. It accommodates most smartphones with a width between 4 and 6.5 inches, allowing you to adjust the viewing angle to find a comfortable position while driving. Because it requires no tools for installation, you can quickly set it up and move it between vehicles if needed.