8x20 MCF II Jupiter Binocular (Clamshell Packaging) is a feather-light binocular and ideal for casual use. Yet despite their diminutive size, the Pentax Jupiter III series still com standard with premium Pentax features. High-quality BaK4 prisms and SMC optics for superior image quality and minimal glare. Rubber eyepiece rings for viewing comfort. And a compact, ergonomic body design that fits neatly into a pocket or purse. Whether attending a sporting event, traveling, or hiking, the PENTAX Jupiter III binoculars provide great optics at an affordable price.