InfiRay Eye III Series EH35 Thermal MonocularEvolving from EYE series, EYE III keeps the accumulate tech strength of EYE II, but entrusts another mission: Improve your hunting efficiency. That is what EYE III is for, being user oriented by providing ultra clear imaging and ease of use. On this basis, EYE III has been changed more in line with user needs, making it one of the best choices for your hunting gear. Meet Eye Series Ease of Use Scroll Wheel Design EYE III employs a scroll wheel.