Key benefits Waterproof, fogproof, and dropresistant performance is maintained to the design extent when using the Amai filter. Easy upgrade: the original protective lens using the same fixing method, with the help of a matching wrench. Installation is simpler and more secure thanks to the disassembly and assembly wrench knob included with the filter. How it works Uses the same fixing method as the original lens. Remove the original protective lens with the matching wrench, then screw on the Amai filter. The installation filter includes a disassembly and assembly wrench knob to facilitate a smooth, secure installation. Compatibility and installation Compatible with devices that use the original protective lens mounting method. Requires the matching wrench to ensure proper fit and to preserve waterproof, fogproof, and dropresistant performance. What's included Amai filter Disassembly and assembly wrench knob integrated with the installation filter (for easy installation and maintenance) Use scenarios Outdoor photography in rain or mist: protects the lens while maintaining filter performance for clear images. Rugged activities (hiking, cycling, snow): helps prevent lens damage from impacts and dust while preserving optical quality. Humid or foggy environments: supports antifog performance to keep images sharp and truetolife.