Optical glass and coated with anti reflective and anti fog films, with hardness of up to 9H, it can effectively resist scratches during daily use and is more durability Small size and light weight, not taking up too much space, to carry Specially design for dedicated camera, it fit perfectly and ensures a stable installation It can effectively block from entering, keep the lens clean, and deformation The lens is coated with waterproof film layer, avoiding affecting the effect; equipped with anti fog function