7x Magnification is the marine standard, with a wide, stable image for tracking other boats, buoys and bridge numbers even in rough water. Sports-Auto Focus™ System lets you focus each eyepiece to your vision once, then keeps images razor sharp from 20 yards to infinity. No more chasing focus on moving objects. High Definition Optics incorporate the finest index-matched glass and advanced lens coatings for best-in-glass image clarity. ClicLoc® system attaches and releases neck strap or harness instantly with push button ease and designed so binoculars hang straight and action-ready. Memory Diopter provides handy mechanism to store and indicate your personal diopter setting. Floating Neckstrap is comfortably padded and bright yellow. It features 3M reflective trim making it highly visible keeping your Commander afloat and easy to spot in case of accidental spills. Makrolon® housing is durable polycarbonate with NBR Long Life rubber armoring, creating a lightweight, rugged chassis that withstands 11 Gs of impact. Impervious to harsh conditions for generations of trusted use. N2 injection™ system seals 14-psi pressurized dry nitrogen into the optic, for fogproof clarity in any condition - from artic cold to desert heat. Steiner Nano-Protection® hydrophobic molecular coating creates a lens surface so smooth water sheets off and dirt, dust, snow and fingerprints are repelled for easy cleaning and a clear view.