Product specification:Color: BlackMaterial: aluminum + ABS plasticWingspan: 11-20.5cmSpecification: 1812.89.4cmAdaptive Monitor: 4.7 to 12.9 inch tabletPackage included: 1 x Headrest Bracket360 Degree Rotation & Four Degree Rotation Shaft: Rotating ball joint for one (360) rotation, easily stretches to max 10.6 inches. With four rotating shafts, you can easily get a perfect viewing angle.Your Preferred Adjustability: Choose to place your tablet directly behind a car seat for a single passenger, or between the driver and passenger seats for multiple passengers. Provide a more convenient view of your video and simplify life.Quick and Easy Installation: Easily attach the headrest bracket to the car seat without tools. Simply attaches to the headrest posts, the headrest mounts in seconds, and turns your tablet into the perfect in-car entertainment system.Safe and Stable Protection: Made of high-quality ABS, the design with a soft sponge pad protects your equipment from vibration and scratches, and increases the friction between the two for better grip and can stand and fall loosely.Excellent Compatibility: This headrest mount is fully compatible with all 4.7-13 inch devices such as New 2019 iPad Pro 9.7 10.5 Air Mini 2 3 4, desk accessories, tab, e-readers, smartphones and tablets.Compatibility:The distance between two metal posts on your headrest should be 4.3 to 6.9 inches.Compatible with smartphones/tablets/switch 6.3 inch-9.3 inch. It's the screen size, not the width.