?Warning?Due to the flexible nature of the gel, some discoloration or residue may be left depending on the type of surface that it is mounted on. Please note, most likely will not work on leather/ vinyl dashboards. ?360°Rotations & Adjustable Height?Swivel ball head allows 360°free rotations to your desired viewing angle. The adjustable Fixed switch helps you adjust the car mount to the perfect height. ?Telescopic Arm? Adjustable telescopic arm accommodates desired length up to 6.3 inches, you can adjust the distance as your wish. ?How to Use the Suction?Keep clean where you install the phone mount. Open the lock lever before using, press the base until there is no air gap between the base and the suction,then lock the button, rather than stick directly to the dashboard or windshield.(Note: try to avoid direct exposure to the sun.). ?Super Sticky Gel Pad?Attach to windshield, dashboard or most smooth flat surfaces. They will not fall off even in turns, bumps or when the speed too fast. The car mount can be restored to its mint condition by rinsing it with warm water and allowing it to air dry.