ITEM NAME:30X25 Outdoor HD Night Vision Waterproof Monocular Telescope 10x Optical Zoom a.imagelink a:hover.imagelink {color:#4b4b4a;.Multiple: 10x. Field of view angle: 5.5 Â °. Objective lens coating: green film. Eyepiece coating: blue film. Color: Black. â— E yepiece blue film, green film of the objective lens. â— S mall, portable, very convenient.