Plastic, durableMagnification: 10xObjective diameter: 34mmExit Pupil: 58-74mm spacing adjustable binocularDiopter:-12-5DLens: optical resin lens prismCoating: Multi-layer antireflection blue film, small color, imaging is good, clarity is very high (so the high cost!)Focus: binoculars focus, focus flexibility, you can easily focus glasses do not have toWeight: 66gNew design to help fishing with a best view , hands free, you don't need to use your hands, both for wearing glasses fish man.This product is a dedicated telescope fishing, floats like to see put in front of it as a relaxing fishing fun.This product is convenient and durable, practical, is the product of choice for fishing enthusiasts.The glasses-style fishing binoculars, eye goggles with a soft.10-fold magnification binoculars, to ensure a distance of 50-100 meters clear insight into the floats and other small goals every move.Left and right eye can independently adjust the sharpness.