About Product:1. The large eyepiece is coated with blue film, with a large view and comfortable viewing.\n2. Extra large plate lens increases the amount of light, and the image is clearer and brighter.\n3. The all-optical glass lenses, broadband green film plating layers of MFC, imaging no partial color distortion watch the feast for the eyes the lens super light transmittance and concentrating function make the LLL night vision effect is better.