This Aqua Series binocular is graced with multicoated optics to ensure clear, crisp views. A large easy-to-operate center focus knob is placed in an ergonomic position for rapid focusing - even when the viewer is wearing gloves. The minimum focus is close enough for glassing a nearby butterfly or other skittish creatures. Twist-up eyecups along with long eye relief offer eyeglass and sunglass wearers a much sought after level of flexibility that"s often found only in higher-priced offerings.