Powerful professional binoculars: 8X magnification, 22mm objective diameter; when you use this binoculars, the vision is wide and it is very clearlyAdvanced technology: Fully multi-coated glass elements elements provide superior light transmission and minimal distortion, better image brightness, contrast and quality. The Bak-4 prism has a perfectly round exit pupil. Provide bright , clear vision and remarkable sharpnessNitrogen filled and O-ring sealed for waterproof / anti-fog, hinged up objective lens covers to protect optics from dirt and lasting scratchesVersatile and sturdy use, non-slip.Very close to focus, durable and protective, armored rubber for shockproof, durable and suitable for harsh environmentErgonomic design, comfortable to hold