10x50mm Engage™ Binocular - Black Roof Prism ED/FMC/UWBCombines 10x magnification with 50mm objective lenses for maximum brightness.Features:ED Prime Glass - Bushnell’s highest quality glass delivers amazing color, resolution and contrast, even in low-light conditions.Exclusive EXO™ Barrier Protection - Bushnell’s best protective lens coating molecularly bonds to the glass, repelling water, oil, dust, debris and preventing scratches.Dielectric Prism Coating - Applied to the prisms, it ensures vivid color reproduction and allows 92% light transmission for bright images.PC-3 Phase Coating - Applied to the prisms, it enhances resolution and contrast.Specifications:10x50mmField of View: 340/113Length: 6.5/165Weight: 29.2/828Eye Relief: 15mm/0.59inExit Pupil: 5mm/.197inClose Focus: 10F/3MEye Cups: Twist-UpPrism System: RoofPrism Glass: BAK-4Lens Coating: Fully Multi-coatedProtective Lens Coating: ExobarrierWaterproofing: IPX7ED Prime Glass: YesPC3 Phase Coating: YesDielectric Prism Coating: YesUltrawide Band Coating: YesLead-Free Glass: YesLocking Diopter: YesPermafocus: NoImage Stabilization: NoAdapts to Tripod: YesColor: BlackWARNING: This product can expose you to chemicals including Chromium (hexavalent compounds) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.