Sapphire Lens Protector Pvd Max Toughness Coating, Allows Top-Tier Durability. Protection Level: Sgs Ip68 Dust And Waterproof Certied. Frames Are Made Of Premium Ti64 Titanium, O Ering Top-Tier Strength And Durability Sgs Certi Ed 9M Synthetic Sapphire, O Ering Superior Scratch Resistant.