Use a 0.5 ultrathin optical glass with at least 90% transmittance and the image is displayed when applied - With special treatment its hardness and durability is close to or as high as mohs scale 8Hpreventing the LCD screen from being rubbered and scraped - With the explosion-proof film it will not damage the LCD screen at all and its elasticity pressure has reached 12kg/cm2preventing the LCD screen from being impacted. - Except the round framing eyepiece we have added anti-fog eyepiece so that it combine the function with anti-fog and anti-dust - The frame design of black ABS can match well with the camera - With the connection of push-pull type or bayonet fixing it is easy to install and remove