Features Lifetime Warranty with registration* HD - High definition, ED - Extra-low dispersion optical system Abbe prisms with Alpen&';s exclusive SHR metallic coating for bright, sharp, high-resolution images The diopter adjustment is a feature that allows for the fine-tuning of one eyepiece, to compensate for differences in vision between a user&';s eyes PXA phase coating for outstanding clarity and contrast Fully multi-coated for maximum brightness Long eye relief provides full viewing performance for eyeglass wearers Waterproof, sealed, and nitrogen-filled for guaranteed internal fog-free performance Twist-up eyecups Cleaning Pen Included Description The Teton binocular series delivers incredible optical performance in a lightweight yet durable body design. With ED and Abbe prism optical design, Teton delivers a bright and sharp viewing with true color fidelity at an affordable price. Our exclusive PXA phase coating and SHR metallic coating on Abbe prism is featured for an exquisitely bright and crisp image. The composite body design provides light weight, yet durable, performance for years of field tough performance. Compare Alpen to competitors that cost two or three times more, you won&';t believe your eyes. Video Specs Item Number 82 Magnification 10x Waterproof Yes Field of View 340FT Lens Coatings Fully Multi-Coated Focuser Type Center Objective Lens Diameter 42mm Close Focus 3FT Light Transmission 92 Prism Abbe Roof Housing Magnesium Eyecup Type Twist-Up Weight 28oz Manual To download printable PDF manual Click Here Warranty *USA Limited Lifetime Warranty when product is registered within 60 days of purchase. Click Here to register. CA Residents: Prop 65 WARNING(S)