?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. ?Extreme Flexibility?This car phone holder with adjustable telescopic neck can extend from 5.1- 7.48 inch and pivots on 225 degree arc for a variety of optimal positions as you need. If you have any questions, don't hesitate to contact us!. ?Perfect Protection?The phone holder for car also with an adjustable supporting foot that you can up and down it, which hold your phone more stable. And the protection silicone pad on the side arms and supporting foot will ensure your mobile device is safe from wear and tear. ?How to use the Suction Pad?Keep clean where you install the phone mount. Open the lock lever before using, you should press the base until there is no air gap between the base and the suction,then lock the lock lever, rather than to stick directly to the dashboard or windshield. ?Easy Operation?The car phone mount with one-click system that enables you to release or lock your phone with just one hand and the swivel ball allows the clamp 360°free rotations to your desired viewing angle.