For the brightest and clearest images, take a look through Razor HD Binoculars. An advanced optical system, extra-low dispersion glass, anti-reflective lenses and multi-layer prism coatings all combine to give you high resolution and color-accurate viewing. Durable, waterproof construction and scratch resistant lens coatings protect the optics against the harshest conditions. The Vortex® Razor HD 10×50 Binoculars are compact and lightweight. FEATURES: Apochromatic optical system and HD glass give exceptional color sharpness Extra-low dispersion glass increases resolution and color fidelity for sharp images Multiple anti-reflective lens coatings for increased light transmission Multi-layer prism coatings offer crisp and color-accurate images Roof prism design enables durable and compact construction ArmorTek coating protects the exterior lenses from scratches, oil and dust Rubber armor gives you a non-slip grip and added protection O-ring seals lock out moisture, dust and debris Argon gas purging prevents fogging Easy to carry and comfortable to hold Muti-position eyecups for a personalized fit Center focus wheel focuses both barrels simultaneously Locking diopter adjust to differences in user’s eyes Tripod compatible Includes rainguard, tethered objective lens covers, comfort neck strap and deluxe padded carry case Manufacturer’s Unlimited Lifetime Warranty Model: RZB-2103 Vortex Optics SPECS: Magnification: 10x Objective Lens Diameter: 50mm Prism Type: Roof Linear FOV at 1000 Yards: 315′ Angular FOV: 6° Exit Pupil: 5mm Eye Relief: 16.5mm Close Focus Distance: 10′ Interpupillary Distance: 57-74mm Dimensions: 6.8″ x 5.1″ Weight: 28.1 oz.