Colour Black Material Aluminium Eye relief 16 Millimetres Lens coating description Fully Multi-Coated Item Weight 126 Grams Water Resistance Level Waterproof 66 eyepiece 9mm; allow find your observation target quickly and precisely; observe more details of deep sky objects planets stars galaxy Compatibility; 6mm eyepiece 1.25in compatible with any telescope and barlow lens; standard astronomy thread can connect with filter Crisp image; 6 elements in 4 groups and FMC green film delivers sharp images with good color correction and contrast that makes it an ideal lens for cruising the stars Comfortable observing; 16mm eye relief so you can really put you eye up to the lens without your eyelashes getting in the way and is especially important if you wear glasses Detail design; blackened lens edges and internally blackened aluminum 1.25" eyepiece barrel to avoid internal reflection and provide a crisp image