Ultima Series spotters perform extremely well under all light conditions which makes them ideal for all types of outdoor viewing activities including bird watching, nature and wildlife, target shooting - even astronomy. The Ultimas are as great to look at as they are to look through. Their sleek design is accented with graceful contours that make them easy to hold and handle. The Ultima Series spotters are the perfect choice for the outdoor enthusiast looking for a spotter with quality design and construction, superior optics, and versatility. Features: 100mm Refractor Spotting Scope Multi-Coated optics 45 deg viewing angle 22-66x zoom eyepiece Sight tube for quick targeting Waterproof Soft carrying case Specifications: Optical Design: Refractor Aperture: 100 mm (3.94 in) Focal Length: 540 mm (21.26 in) Focal Ratio: 5.4 Finderscope: Sighting tube Angle: 45 deg; Eyepiece 1: 8-24 Zoom Magnification 1: 22-66x Carrying Case: Soft Case Angular Field Of View: 1.8 deg; - 1 deg; Linear Field of View (@1000 Yds): 95ft @ 22x 53ft @ 66x Eye Relief: 18mm @ 22x Near Focus: 33ft @ 23x Optical Coatings: Multi-Coated Tripod Adaptable: Yes Camera Adaptable: Built-in T-thread on Eyepiece Other Equipment: Tripod Balancing Platform Optical Tube Length: 19 in (482.6 mm) Weight: 2041g