Vortex Viper HD 15-45x65 Spotting Scope - Straight - A high-end spotter without the high-end price tag, the Viper HD spotting scope proves you no longer need to drop 4-figures to get premium-level performance and features. An HD optical system with incredible optical performance brings even the finest details at a distance in for a closer look. Built to withstand the harshest rain, snow, heat or rugged abuse you can dish out, the Viper HD spotter is a perfect fit whether you're in the hills or at the range. HD Lens Elements Premium extra-low dispersion glass delivers the ultimate in resolution and color fidelity, resulting in high-definition images. XR Fully Multi-Coated Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Dielectric Coating Multi-layer prism coatings provide bright, clear, color-accurate images. Porro Prism Valued for a rich depth of field, wide field of view, and three-dimensional image. Straight Body Design Valued for speedy target acquisition and ease of use. Most compatible design for use with car window mounts. Waterproof O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments. Fogproof Argon gas purging prevents internal fogging over a wide range of temperatures. ArmorTek Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt. Adjustable Eyecups Twist up and down for comfortable viewing with or without eyeglasses. Helical Focus Allows for fast and fine adjustments. Built-in Sunshade Reduces glare and shields the objective lens from raindrops and snow.