1. The seat back mobile phone holder can be freely rotated 360 degrees according to your different needs, providing you with the best viewing angle and experience. 2. Non-graded crimping telescopic buckle design, which can provide 10 times the type of gripping force. Compression spring rods create elastic force that firmly grips the metal rod of the pillow, stable and won't wobble even on bumpy roads. 3. The seat back phone holder has a telescopic arm, which can help you adjust the distance between the digital device and your eyes. 4. The mobile phone cable clip adopts a hollow design, which is convenient for charging or operating the digital side buttons. Keep the charging port so you can watch your phone on the go and enjoy it anytime, anywhere. 5. Seat back cell phone holder is widely used for 4-11 inch tablet or cell phone. It also works on cars with different seat types