Vortex 10x50 Viper HD Binoculars (V202). The Vortex Viper HD 10x50 binoculars feature a wider field of view and larger angle of view in a compact, ergonomic design for more spacious and comfortable viewing. Optically, they offer 10x magnification with 50mm objective lenses for excellent light-gathering in low-light conditions such as dawn and dusk. The compact roof prism design enhances performance while minimizing weight and bulk. Phase-correcting and dielectric prism coatings improve color fidelity, contrast, and light transmission. High-density HD, extra-low dispersion (ED) glass reduces chromatic and spherical aberrations for clear, sharp, and high-contrast views. Proprietary XR anti-reflection fully multi-coated optics and ArmorTek exterior lens coatings protect lenses from scratches, oils, and debris. Features include a wide 66° apparent angle of view, 346-foot field of view at 1000 yards, closed-bridge configuration, large slip-resistant focus knob, locking right-eye diopter, 56-75mm interpupillary distance, twist-up click-stop rubber eyecups, tripod mountable with optional adapter, 16mm eye relief, and 5mm exit pupil. The binoculars are O-ring sealed and argon-filled for waterproof and fog-resistant performance. Package includes Vortex 10x50 Viper HD Binoculars, Vortex GlassPak binocular harness (tan), neck strap, rainguard eyepiece cover, 2 tethered objective lens covers, and a Vivitar professional cleaning kit. MPN: V202-1K, UPC: 875874009080.