Uses a 0.5mm ultra-thin optical glass with at least 90% transmittance. The image is displayed in focus when applied. With special treatment ,its hardness and durability is close to or as high as mohs scale 8H,preventing the LCD screen from from being rubbed and scraped. With the Explosion-proof film, it wil not damage the LCD screen at all,and its elasticiy pressure has reached 12kg/cm*cm,preventing the LCD screen from being impacted. Except the round framing eyepiece, we have added an anti-fog eyepiece so that it can combine the function with anti-fog and anti-dust. The frame design of black ABS can match well with the camera.