1Exact Specifications: The watch glass crystal lens is a plastic watch crystal, which is manufactured according to the exact specifications and sizes of the original 2Waterproof Function: The watch glass crystal lens will fit your watch just like the original watch, and your watch will be waterproof 3General Replacement: The watch crystal lens replacement is a universal replacement watch part, can be used without complicated process 4Acrylic Plastic: The watch glass lens replacement uses acrylic plastic, which is wearable and durable, and has a long service life 5Small and Compact: The small and compact body does not take up too much use space, which is convenient for storage and use