The optical system employs extra-low dispersion glassVanguard's 8x42 Endeavor ED binoculars deliver sharpness and clarity like never before
- Extra-low Dispersion (ED) glass
- Bak4 phase-coated prisms and fully multi-coated lenses
- Three stage twist out eyecups with long eye relief and locking diopter ring
- 100% waterproof and fogproof
- Lightweight, open bridge body design with large, precise focus wheel