Vanguard Vesta m Roof Prism System Binocular BAK4 Rubber Black. The Vesta 42mm binoculars offer the active outdoorsman or path seeker a sharp looking high performing and mechanically solid binocular at a great price. Appealing to the success driven weekend birder traveler or the hunter who is price conscious yet driven by performance and value. The Vesta 42mm contains optical quality glass with an enhancing BaK4 roof prism design and Multiguard multi-coating technology for crisp resolution clarity color fidelity and light transmission. Each binocular is manufactured and assembled with a light weight yet durable housing. The large center focus knob allows the user to experience everything in fine-tuned detail. Specifications for Vanguard Vesta 10x42mm Binocular: Manufacturer: Vanguard Color: Black Magnification: 10 x Objective Lens Diameter: 42 mm Prism System: Roof Prism Material: BAK4 Image Stabilizer: No Eye Relief: 17 mm Exit Pupil: 4.2 mm Field of View Linear: 298 ft at 1000 yds Optical Coating: Fully Multi-Coated Binoculars Focus System: Center Focus Interpupillary Distance: 56 - 74 mm Close Focus: 6.9 ft Weather Resistance: Fog Resistant Water Resistance Level: Waterproof Finish: Rubber Fabric/Material: Rubber Magnification Type: Fixed Features of Vanguard Vesta 10x42mm Binocular All-purpose binoculars for nature observation hunting birding and travel Ergonomic and durable body with sleek European design Light weight yet durable housing with a no-slip rubber armoring BaK4 Roof prism design and fully multi-coated lenses for a clear viewing experience Large center focus knob for fast and smooth ease of use Twist-out eyecups for comfortable viewing All lenses are optical quality glass Waterproof and fogproof Package Contents: Vanguard Vesta 10x42mm Binocular Soft Pouch Neck Strap Vanguard Vesta 1042: Vesta Binocular 10x42mm Roof System BAK4 Prism Black