SIIILR Twist-Up/Down Eyecups - Twist-up and twist down eyecups with locking diopters are standard on all SIIILR Binocular models. Simply twist down for eyeglass wearers and twist up for non eyeglass wearers.
SIII Pop-Up Eyecups Binocular Specifications - Pop-up eyecups are standard on all SIII Binocular models. Simply push down for eyeglass wearers and pull up for non eyeglass wearers.
Fully Multi-Coated Lenses - All Sightron Premium binoculars feature fully multi-coated ocular and objective lenses for maximum light transmission and superior resolution.