Vortex 12x50 Diamondback HD Binoculars Featuring powerful 12x magnification and large 50mm objective lenses for bright, detailed viewing even in low light conditions, the Vortex 12x50 Diamondback HD Binoculars are a versatile optic ideal for birding, nature observation, and general outdoor use. They can be tripod-mounted with an optional adapter and include a Vortex GlassPak harness for comfortable, extended viewing sessions. The Diamondback HD provides sharp, color-accurate images with minimal chromatic aberration, exceptional color fidelity, and edge-to-edge clarity thanks to ultra-high-definition glass, an index-matched lens system, XR Plus coatings, and dielectric-coated, phase-corrected roof prisms. ArmorTek exterior coating protects lenses from scratches, oil, and dust. Built for durability, the housing is argon-filled and O-ring sealed to be waterproof, fogproof, and resistant to dust and debris. Rubber armor provides a secure, non-slip grip, and the oversized focusing knob allows precise adjustments even while wearing gloves. Twist-down eyecups accommodate glasses wearers, and the ergonomic design ensures comfortable, fatigue-free handling. Optical Performance: Roof prism design, 12x magnification, 50mm objective lenses, fully multi-coated optics for superior brightness, dielectric-coated phase-corrected prisms for true color and contrast, 5.2° angle of view, 271 ft field of view at 1000 yards, 6 ft close focus distance, 4.2mm exit pupil, and 14mm eye relief. Use & Handling: Lightweight short-hinge bridge design, adjustable interpupillary distance (60–75mm), large knurled center focus wheel, textured diopter adjustment ring, and twist-up rubber eyecups. Construction Details: Includes GlassPak harness with accessory pocket, protective rubber armor, argon-filled and O-ring sealed body for waterproof and fogproof performance, and ArmorTek coating for resistance to scratches and contaminants. In the Box: Vortex 12x50 Diamondback HD Binoculars, Vortex GlassPak Harness (Tan), Neck Strap, Rainguard Eyepiece Cover, Tethered Objective Lens Covers, and Lens Cloth. MPN: DB-217 UPC: 875874009967