uxcell AR Coated Watch Lenses, Round Flat Mineral Watch Crystal Glass, 30mm x 1.5mm, Pack of 3

Size - Material: Optical glass. Mirror type: AR coating. Diameter: 30 mm. Thickness: 1.5 mm Material - Made of high-quality optical mineral glass, it is unbreakable and has a long service life. Features - The AR-coated mirror increases light transmittance and reduces the impact of radiant light on the line of sight. It is crystal clear and highly transparent. Application - Easy to install and replace, and broken ones can be easily replaced. It is ideal for watch repairers to repair their own watches. Note - Before installation, look along the edge of the glass lens to determine which side is coated. Attach the coated side to the bottom.