Magnification: 8-24xObjective Lens Diameter: 50mm (Broadband green or blue mode) Eyepiece Diameter: 22mm Field of view: 235FT/1000YDS; 78M/1000M Prisma: bak4Exquisite and comfortable feeling, elegant appearance, fine workmanship, convenient to useFocusing type: Central Axial plus right eyepiece fine-tuning, can focus focal distanceCoating: Several layers of vacuum high light transmittance green film, powerful light transmittance performance and high definitionApplication: bird appreciation, watching sports game or the concert, outdoor travelling, enjoying the prospect etcTelescope Maintenance Method:After purchasing a telescope, you must pay attention when using it: Its storage place must be dry, since the film is easy to fall off and the prisma may be fogging or mouldy fter long-term becoming dampWhen using, if it is found that there is some dirt or traces on the lens, DO NOT swab with waterThe best way is to use swab at home (cotton swab) and dip it in some alcohol or gasoline, wipe gentlyBetter not to use lens wiping cloth to dry clean, it is easy to scratch the lens surfaceNote: This binoculars are light enhancing or glimmering Night Vision,it will not work in full dark environment