Satechi Universal Headrest Mount - Compatible with iPhone XS Max/XS/XR/X, Samsung Galaxy S9 Plus/S9 and more (Black, for 3.5" &ndash; 5.5" Smartphones) Fits smartphones 3.5-5.5 in diagonal length and 6mm-14mm thick 10,000 times tested Urethane Ball joint Adjustable 360-degree rotation and tilt Anti-shock padding reduces trembling Stable mount allows easy access to your screen