Specification: Magnification : 50x Prism Type : BAK-4 Field of view : 1500M/9500M Lens Coating : FMC green coated lens Weight : 271g Features : Our Monocular Telescope feature high quality BAK4 prisms and full multi-layer coated lenses. - BAK-4 prims represents the higher refractive index rate, brighter edges of the field of view, as well as circular shape of the exit pupil, which means more light will be transmitted to the entire field of view. - Compared to other single-blue coated monocular, FMC ones (several coatings on all lens surfaces) aims to improve image clarity and brightness, helping you see target more clearly and brightly. Works well in low light and night. Day night vision will help you see things in low light, it doesn't help you see things in the dark. This Product Has Dual Focus Capability (Perfect For Use In Any Circumstances). The eyecup can be twisted up to deeply focus the view for yourself, and then adjust the focus adjustment and zoom adjustment until the view become clear. The width of phone adapter is 57-80mm, it suit almost phones in the market. Adjust the size distance of the phone adapter and put the phone in. When the phone connect with monocular, the picture is a circle view and around is black, please zoom the picture and you'll get a full size picture. Package Included : 1 x Monocular Telescope 1 x Phone Clip 1 x Flexible Metal Tripod 1 x Lens Cleaning Rag 1 x Cloth Bag 1 x Anti-Drop Hand Strap 1 x User Manual