Product description: Product name: tablet & phone headrest mount Material: ABS + aluminum alloy + non-slip silicone pad Color: black, red Applicable device size: 4.7-12.9 inches Product weight: 10oz Applicable backrest rod diameter≦14mm Applicable chair back rod distance:101-141mm Features: With reserved for charging port, you can play while charging. It can be used frequently. Silicone soft pads do not hurt the car and tablet. Three-stage stretch design that can be adjusted to your comfortable distance. 360° adjustable, you can use the tablet in portrait or landscape mode. Stable & shockproof, strong fixation, can protect your equipment wellprotect your device well. Note for use: Remove the tablet or phone case before use.1