Features:Gravity Sensor Linkage: Adopts high-quality aluminum alloy material, precise gear structure, to ensure smooth linkage.Single-hand Operation: Safe to operate your phone while driving.Wide Compatibility: Suitable for 4.5inch - 6.0 inch phone use.Exquisite Appearance: Cool and practical shield-shape appearance, not easy faded, anti wearing and tough.Easy Installation: strong air vent clip, anti-slip silicone, unimaginable stability.