Building on the successful foundation of the award winning Endeavor ED binoculars, Endeavor ED II 10x42 Binocular brings Vanguard Optics to another level. The Endeavor ED II series of/ers the latest Vanguard optical technology enhancements including premium Japanese HOYA ED (Extra-low Dispersion) glass with edge-to-edge clarity that enhances light transmission.An open-bridge design helps to reduce weight without sacrificing strength, and provides a large surface area to hold. Pebbled rubber armoring helps to give protection from drops and impacts while helping to provide a non-slip grip. Designed for durability, the lightweight magnesium-alloy housing is nitrogen-filled and o-ring sealed for water and fogproof performance, and the 3-stage click-stop twist-up eyecups provide a custom-fit eye relief for use with or without eye-wear.The10x42 Endeavor ED II Binocularfeatures Extra-low Dispersion (ED) glass and phase-corrected BaK4 prisms that work together to virtually eliminate chromatic aberration, which produces images with true color fidelity across the entire field of view and enhanced contrast. Complementing the glass and prisms are anti-reflection fully multicoated optics that improves light transmission for bright and clear images, with greater low-light performanceOptical Performance8x magnification32mm objective lens diameterExtra-low dispersion (ED) lenses virtually eliminates chromatic aberration for true color transmission across the entire field of viewPhase-corrected BaK4 prisms provides improved light reflection, high-contrast, and true color fidelityAnti-reflection fully multicoated optics enhances light transmission for brighter views57.6 apparent field of view378ft field of view at 1000 ydUse and HandlingKnurled center focus wheelOpen-bridge design reduces weight and provides a more comfortable grip3-stage click-stop twist-up eyecups for use with or without eye-wearRight-eye locking diopter adjustmentTripod mountable with optional adapterConstruction DetailsDurable magnesium-alloy housingNitrogen-filled and o-ring sealed for water and fogproof performancePebbled rubberized protective housing armorFlip-down tethered objective lens coversFeaturing Hoya Extra-Low Dispersion (ED) GlassPhase-Corrected Roof PrismsAnti-Reflection Fully Multicoated OpticsErgonomic Open-Bridge ConfigurationDurable Magnesium-Alloy HousingTextured Center Focus WheelNitrogen-Filled, Water and FogproofClick-Stop Twist-Up EyecupsPebbled Rubberized ArmorTripod Mountable with Optional AdapterWARRANTYApplicable by national lawMATERIALMagnesium AlloyDIAMETER OF OBJECTIVES42mmDIMENSIONS (L X W)154 x 130EYE CUP3 stops Twist-out eyecupsFIELD OF VIEW @1000M114FOCUS SYSTEMCenter FocusLENS COATINGFully multi-coatedNEAR FOCUS (M)2OCULAR ADJUSTMENT4PHASE COATINGYesPOWER10PRISM TYPEBaK4RELATIVE BRIGHTNESS17.6TWILIGHT FACTOR20.4VIEW ANGLE6.5WATERPROOFYesWEIGHT (OZ)27.16