1. Anti-collision and anti-fall: TPU four-corner air bag design, reserved gap. Play the anti-collision and anti-drop effect, protect the corners of the phone. 2. Standing stand: Design the depression angle of view, free your hands and satisfy your vision. 3. Internal heat dissipation: The design of internal heat dissipation slot is conducive to the circulation of heat dissipated by the mobile phone. 4. Lens protection: It is 2MM higher than the camera to protect the camera from the daily scratches and wear of the lens. 5. Has good performance and can be used for a long time.