[OPTIMAL EYEPIECE LENS SIZE]: 22mm eyepiece diameter, field of view. The 22mm lens collects than the smaller eyepiece binoculars, provides a clearer and brighter field of view. In addition to the protective cover and reinforced material, the lens of this size is also easier to protect than the larger eyepiece binoculars and is not easy to damage. [50MM OBJECTIVE, BAK7 PRISM, NIGHT VISION]: The low light night vision binoculars with bak7 prism, 55MM objective lens, and Full Multi-Layer Coating glass lens. The lens has well controlled and ghosting. It is easy to see objects in shadow even in backlight or bright background.imaging more vivid colors without dark edges.It can be used at night, but not in complete darkness. [QUALITY OPTICS]: The easy focus high power binoculars comes with 10-30x zoom magnification, tripod anti-shake interface, bringing you 235ft/1000yds high definition and view.Corrective optical coating are good for color fidelity and minimize distortion. Diopter System adjusting the imbalance vision of both eyes. The and center focus knob makes it simple to operate and easy to focus. [NON- & WATER-PROOF & SHOCK-PROOF & DUST-PROOF & ANTI-FOG] Ergonomics, structure is more stable.anti- structure with odorless rubber armor for that provides protection as well as a secure and comfortable gripping surface. [WIDE RANGE OF USES]: The adults night vision and day binoculars suitable for bird watching, hunting, animal watching, sailling, travel, sports games, concerts, opera, stargazing, sightseeing and astronomical viewing. Also perfect for outdoor activities such as climbing, hiking, travelling, camping, watching wildlife and scenery. Material: plastic colour: black Package Contents: 1 x black storage bag 4 x Lens protective cap 1 x binocular harness strap 1 x English Instructions 1 x Lens cleaning cloth 1 x Zoom Binocularss Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.