Compact, lightweight and durable binoculars from Vanguard, the SDT series is fully waterproof, fogproof and sports a rubber armored exterior for protection. Comfortable to hold an simple to adjust, these binoculars incorporate Vanguard`s high end technology for crisp, clear viewing at a reasonable price. lt;p gt; lt;b gt;FEATURES: lt;/b gt; lt;ul gt; lt;li gt; Nitrogen Charged and O-ring Sealed: 100% Waterproof and Fogproof lt;li gt; P2 Phase and Emerald Coated lt;li gt; V-Max Silver Coated Prisms lt;li gt; Magnesium Alloy Body lt;li gt; Textured Rubber Armor lt;li gt; Click Diopter lt;li gt; Long Eye Relief Accomodates Eyeglass Wearers lt;/ul gt; lt;b gt;P2 Phase Coating lt;/b gt; lt;br gt; When treated with VANGUARD P2 Phase coating the BaK-4 prisms offer crystal clear images and high resolution. This coating has been specially developed to provide enhanced image clarity and true color reproduction. lt;p gt; lt;b gt;Emerald Coating lt;/b gt; lt;br gt; The VANGUARD Emerald coating is specifically designed to provide the full spectrum of color within the band of green tones. This coating is essential for outdoor nature enthusiasts because it ensures the most vivid and natural shades of green. lt;p gt; lt;b gt;V-Max Coated Prisms lt;/b gt; lt;br gt; V-Max Silver coating provides near perfect light reflection which offers brighter more crisp images with sharp contrast. Thanks to this high-tech coating VANGUARD optics achieve near perfect light transmission over the complete light spectrum, ensuring very bright, vivid images. lt;p gt;