1. 360 degree rotating joint, easy to adjust the viewing angle
2. The back safety tightening knob design, tighten the screw knob, easy to fix the angle
3. Rubber clips, stable and non-slip, do not hurt the car
4. With buttons on the back, easy to operate with one hand
5. Knob adjustment of bracket arm, easy to use
6. Size: about 11x6.5cm
