Bininbox Polarized Fishing Binoculars Sunglasses Zoom Optical Magnifier Eye Wear Glasses Telescope This Glasses Style Fishing Binoculars has ADJUSTABLE FOCUS, HAND FREE. And you don't need to worry about whether you are shortsighted or far-sighted because you can choose the type of lens that suit your eyes' shortsightedness. Adjustable Focus of objective Lens, turning the right and left side can adjust the different amplification separately. 3 OPTIONAL EYE LENS to suit the type and degree of your eyes' shortsightedness. Widely used in watching the operas/concert, watching exciting ball matches, fishing, traveling and other recreational activities.