1. Adjustable, can be used on most of the smart phones, the opening is 52mm-76mm 2. Easy install and firmly fits on your steering wheel 3. Unlike any other universal mount holder, this holder's mounting plate is specific fit for your device, it will hold your device more securely, non-slip with one hand easy access. 4. Hands free 5. Protection: the device is embedded with soft silicone pad, which protect you phone from scratching or dents.