With this magnetic holder/mount, drive hands-free for the best possible experience. Ideal for navigating! Once installed, mounting and removing it is simple and only requires one hand. - Universally compatible with all smartphones - Secure and powerful magnetic strength We advise attaching the metal plate to the phone itself and then, as usual, putting on your protective phone cover (the metal plate can also be placed between the phone's battery and back cover). Additional protection is provided by the rubber grip on the magnetic surface. Stainless steel is the material. Colors: Gold, Rose Gold, and Silver Note: For tablets or large smartphones, two magnetic mounts might be required.