Utilizing a moderate 50mm objective lens keeps the overall form factor small to make it easier to pack and carry in the field, and their Advanced MultiGuard lens coating system boosts its performance in low and challenging conditions while ensuring the views remain bright and clear. Its broad zoom range allows you to more easily scan the landscape for targets at the low 12x with the ability to quickly dial up the power to 45x and make detailed observations of distant subjects.The chassis is made of a lightweight and durable aluminum alloy that is protected by a black rubber armor. The chassis is nitrogen filled and O-ring sealed to be waterproof and resistant to internal fogging even in extreme weather and temperature conditions. The angled-viewing configuration sets the eyepiece at a 45 angle to the scope's body, which places the user's head in a more comfortable viewing position versus straight-through viewing models. A 1/4"-20 mount makes it compatible with many tripods, quick release plates, and other popular support systems like window mounts, and Vanguard includes a compact tabletop tripod to get you observing right out of the box. A lightweight carrying bag makes it easy to carry in the field.Optical PerformanceBroad 12-45x zoom eyepiece allows you to make observations at low power with the ability to zoom in for detailed viewsModerate 50mm objective lens helps to ensure views remain bright and clear while maintaining a compact form factor and relative light weightAdvanced MultiGuard coating system: Proprietary formula for their fully multi-coated optics maximizes light transmission to produce bright and clear high-contrast images with accurate color and improved resolution156-foot field of view at 1000 yards at 12x power, 52-foot at 45xUse and HandlingThe eyepiece is set at a 45 angle to the optical tube, placing the user's head in a comfortable viewing position while standing, sitting, or lying proneFold-down rubber eyecup for comfortable use with or without eyewearStandard 1/4"-20 mount is compatible with most quick release plates, heads, and photo/video/field tripods and other support systems11mm eye reliefWide 4.2mm exit pupil at 12x magnification will completely cover most pupils as they open and dilate in low lightConstruction DetailsLightweight and durable aluminum-alloy chassisBlack rubber armor protects the optical tube from impacts and bumps while providing a sure grip during setup and breakdowneven in cold and wet conditionsOptical tube is nitrogen filled and O-ring sealed to be waterproof and resistant to internal fogging in extreme conditionsCompact design measures under 10" in lengthTabletop tripod outfitted with a simple-to-use head, anti-slip rubber feet, and legs that open simultaneously for faster setupLightweight carrying bag holds the spotting scope and tripod for easier carrying to the range or in the fieldSpecificationsViewing Angle: AngledMagnification: 12 to 45xObjective Lens Diameter: 50 mmField of View: 12x: 156.6' @ 1000 yd / 52.0 m @ 1000 m45x: 52.2' @ 1000 yd / 17.3 m @ 1000 mMinimum Focus Distance: 12x: 29.5' / 9.0 m45x: 39.4' / 12.0 mExit Pupil Diameter: 12x: 4.2 mm45x: 1.1 mmEye Relief: 11.0 mmFogproof: Yes, Nitrogen FilledWater Resistance: WaterproofTripod Mounting Thread: 1/4"-20 FemaleDimensions: L: 23.6 cmWeight: 601.0 gIn the boxVanguard Vesta 350A 12-45x50 Spotting Scope (Angled Viewing)Lens ClothEyepiece CapObjective Lens CapCarrying Bag with StrapTabletop Tripod