On most of standard size binoculars models, there will be a thumb lever or wheel placed conveniently within reach so you can adjust the magnification without changing your grip or taking the eyepieces away from your eyes.
Ultra-premium mid to long range binocular utilizes the unique and efficient Abbe-Koenig prism designed to produce the highest in light transmission and brightness.Features:- The Zulu9 combines Sig Sau..
Enjoy a smooth zoom on the Essentials 10-30x50mm Porro Prism Binoculars, giving the variable power you need for different scenarios. A lever near the right eyecup lets you control magnification, and a..
Essentials porro-prism binoculars fit the bill for all your adventures - from watching your favorite pro sports game to a remote camping trip. Their fully coated lenses optimize clarity and brightness..