1. Bracket adjustment knob adopts mechanical locking, stable and solid, not easy to loosen 2. Knob shaft can be easily adjusted for loading cell phone, four grips with non-slip shock absorbing spacers, no harm to the cell phone 3. Reserved buttons and interfaces, do not block the screen information, more convenient to ride the operation 4. 360-degree spherical adjustment axis design, more than plane adjustment, no visual dead space, more comfortable and convenient 5. Bracket stretch range about 55-95mm, applicable to most cell phone sizes, with the case can also be used 6. Material: aluminum alloy 7. Weight: about 128g for mirror model, about 120.5g for handle model 8. Description: only the bracket, does not include other