... -coated, double wheels side adjust,wide view angle,high resolution 20-60X85 spotting scope, waterproof, BAK-4 prism, fully multi-coated, double wheels ... side adjust, wide view angle, high resolutionMAGNIFICATION: 20-60xOBJECTIVE DIAMETER(mm): 85 ... PUPIL(mm): 4.25-1.42 EYE-RELIEF: 21-18 20-60X85 spotting scope