Check the listing for details. New Vortex Viper HD 10x42 Binoculars VPR-4210-HD. Color: Green, Condition: New. Listed at 419.00 USD. Vortex Optics Viper HD Roof Prism Binoculars 10x42 VPR-4210-HD10x magnification and 42mm objective lenses, the 2018 Viper HD is a high-end, full-size yet compact binocular that is suited for any hunt. An easy-to-grip, rubber armored chassis with perfectly placed thumb indents provides superior ergonomics.A high density optical system delivers exceptional resolution and edge to edge clarity. XR anti-reflective lens coatings give bright, full views even in low light situations.A locking, right-eye diopter tailors each barrels' focus to your eyes. The smooth, center focus wheel provides fine focus control and quick sharp views. Twist-up eyecups rest comfortably against the face and provide customized eye relief.Argon purging and O-ring seals provide a lifetime of waterproof and fog proof performance. Ultra-hard, scratch resistant armortek protects the exterior lenses from scratches, oil, and dirt.In the field, you should have no trouble reaching them at a moment’s notice with the included Glass Pak Chest Harness providing comfortable, protected, strain-free, all-day carry.