Konus 7x50 Blue Cup Binocular

The Konus 7x50 Blue Cup Binocular is an ideal 7x50 7.1° porro prism unit for nautical viewing.  It is totally waterproof and fogproof, and inclement weather and sudden changes in climate will not affect your ability to see clearly.  With its 50mm diameter objectives and 7.1mm exit pupil, the Blue Cup 7x50 will deliver a bright view in all viewing conditions.  This is a center focusing unit, uncommon for a 7x50, and thus it is suited to regular use beyond boating.  It has peel-down type eyecups and ruby-coated objective lenses.