Versatile extension arm for viewing distance: The double axis extension arm and threesection arm design provide adjustable reach from 4.72 to 10.63 inches, allowing passengers to set their preferred viewing position. 360degree rotating clamp for flexible viewing: The holder can swing between two rear seats and rotate in any direction, ensuring a comfortable viewing angle for both occupants and easy screen sharing. Broad compatibility for devices and vehicles: Suitable for cars, SUVs, vehicles, and trucks. It fits most tablets and mobile phones from 4.7 to 13 inches, even with thick cases, and works with headrest poles sized 0.4 to 6.3 inches, making it a versatile road trip accessory. Secure, scratchprotected design: The twobolt design provides maximum stability to prevent drops on bumpy roads. Bolts and clamps are covered with protective silicone to guard the pole and devices from scratches. Practical, vehiclefriendly features: The combination of a robust extension arm and 360degree clamp accommodates a wide range of seating configurations and device sizes, helping keep passengers entertained and connected on the move. Use scenarios: Family road trips: rearseat passengers can view a tablet or phone for movies, games, or educational apps without handing devices back and forth. Twopassenger sharing: the 360degree rotation allows screen viewing to switch between two rear seats during long drives, enabling convenient shared viewing. Various vehicle types and devices: suitable for cars, SUVs, and trucks, fitting devices from 4.7 to 13 inches (including thick cases) and mounting on headrest poles 0.4 to 6.3 inches, ideal for extended trips, rides, or daily commutes.