Universal gravity sensing bicycle mobile phone bracket. Depending on gravity sensing, the mobile phone can be automatically clamped when placed. The fixing is very firm, and it can resist magnitude 8 earthquake without loosening. Two installation modes, you can install it beside the front of the car or the rear-view mirror. It can rotate 360 degrees, either horizontally or vertically. Mobile phones can be used from 4.8 inches to 6.8 inches.