20-60X80 spotting scope,ED lens, waterproof,BAK-4 prism, fully multi-coated, double wheels ... side adjust, high resolution 20-60X80 spotting scope, ED lens, waterproof, BAK-4 prism, fully multi-coated, double wheels ... EXIT PUPIL(mm): 4-1.3 EYE-RELIEF: 20-18 ed spotting scopes20-60X80