SHARP HIGH-RESOLUTION IMAGES: With ED (extra low dispersion) glass lenses and Abbe prism optical design, Teton delivers a bright and sharp viewing with true color fidelity and excellent light transmission for low light viewing. FULLY MULTI-COATED: Our exclusive PXA coating on Abbe prism is featured for an exquisitely bright and crisp image. RUGGED AND LIGHT WEIGHT: The composite body and magnesium housing design provides light weight, yet durable, performance for years of field tough performance. LIMITED LIFETIME WARRANTY: Product registration within 60 days is required. USA SUPPORT: Based in Springdale Arkansas USA, you can always be assured of excellent customer service should you ever have a problem or question. 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.