Featuring 10x magnification, fully multicoated lenses, and phase-coated BAK4 prisms, these Bresser 10x26 Pirsch Binoculars are suited to birding, sightseeing, sporting events, concerts, and more. Twist-up eyecups ensure you see the full image with or without eyeglasses. The binoculars are waterproof and nitrogen-filled to prevent internal fogging from sudden temperature changes. The rubber-armored body is comfortable in the hand, and they weigh less than 10 ounces, so they aren't burdensome for a day in the field.