1. Optically tempered glass with a hardness of 9H. Optically tempered glass is about ten times harder than plastic lenses. Plastic typically has a hardness of 1H, while tempered glass reaches 10H, making it scratch- and more than plastic lenses. It also offers improved light transmission. 2. The lens material has a light transmittance of nearly 92%, and an AR coating increases this to over 98%. 3. The lens is coated with a water-repellent coating, achieving a drip angle of 115 degrees, preventing water droplets from remaining on the lens and affecting the quality. 4. mounting for easy installation and removal. Material: Optically tempered glass with an anti-reflection, anti-fog, and anti-water coating, then hardened. Functions: Anti-scratch, anti-fog, waterproof, dustproof, anti-deformation, and high-temperature . Hardness: 10H Lens Material: Optically tempered glass Light transmittance: 99% Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color:As Shown Material:Optical Tempered Glass Package Contents: 1 Pair * Protective Glasses Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.