Beileshi 20X50 HD Magnification Climbing Waterproof Telescope Binoculars Best-selling Essentials line balances optical performance and quality construction, at an affordable price Boasts durable design and rubberized, abrasion-resistant finish.Night vision (It can NOT see anything in total darkness) 20X magnification, 50-millimeter objective lens, high-quality auto focusing porro prism. Coating:blue membrance ,diopter adjustment for fine focusing Telescope is pure optical instruments, so it is ok to use in the evening , but if the target is under the condition of black and no light environment, we can not see anything. Because the telescope is LLL night vision, its characteristic is by external light( such as lamplight/concert/street lamp/neon light/fireworks etc.) to see,Accessories:Specification/Lens cloths/bag