The Sightron SIII 12x50 ED Binoculars are the highest-magnification fixed binocular in Sightron's SIII ED II series, purpose-built for hunters and outdoorsmen who need maximum target resolution and light gathering capability in a single package. The 50mm objective lenses deliver a 4.2mm exit pupil at 12x magnification — maintaining a useable image in low-light conditions where smaller objective binoculars begin to lose brightness — while the fully multi-coated ED glass and phase-correction coated BAK-4 roof prisms ensure exceptional clarity, contrast, and chromatic aberration correction. At 31.2 oz in a nitrogen-purged, fully waterproof magnesium alloy body, this is a full-size binocular well-suited to tripod-mounted glassing and backed by Sightron's Lifetime Performance Guarantee, shipping with a carry case, neck strap, objective lens covers, eyepiece covers, and a lens cleaning cloth. Sightron SIII12X50ED 12x Magnification 50mm Objective Lens 31.2oz Waterproof Binoculars w/ Carry Case, Strap, Lens Covers/Cloth 25183