10 x 22mm Powerview Porro Prism Binoculars Kaysion Waterresistent Folding Binoculars Compact Telescope Kids Binoculars for Bird Watching Concerts Hunting Outdoor Activities 1.High Definition Binocular:10x magnification and 22mm objective lens|Porro Prism System |Prism Type: BK-7|Field of view: 6.1|Eye Relief: 10mm 2.Durable Mini binoculars:Made of metal aluminum alloy, durable and sturdy.Rubber eye cups and nonslip rubber armor coating absorbs shock resistent,designed for better grip and protection. 3.Twisting eyecups for personal comfort with central focus knob and dioptric correction.By twisting right eye eyecups,you could enjoy clear and high definition image and eliminate parallax. 4.Fully-coated, high-quality optical glass, with FMC blue film, the image will be more clear and sharp, without any color difference and with wide vision. The light transmittance of the whole optical multilayer composite broadband film is better, even in a week light environm. 5.Portable Lightweight Binocular:Easy for adult and children to be carried.Ideal for opera, sports, horse racing, and bird watching. It also can be used for touring sightseeing, camping, mountain-hiking, shooting, fishing or other outdoor explorations.