Canon has made its world-renowned Optical Image Stabilizer more convenient to use on these binoculars. Just press the button once for continuous image stabilization. Multi-coated Ultra-Low Dispersion (UD) objective elements add contrast, clarity and color fidelity. Housed in a rugged, water-resistant and slip-free rubber body, these binoculars can be used in rain or shine, whether in a football stadium or on the high seas. Includes a wide, extra bright 50mm objective lens, for sharper, clearer viewing at this high magnification. A convenient tripod socket has been added for additional stability and added comfort. Uses two AA Alkaline batteries. For added clarity, the Anti-Fog Eyepiece (AE-B1) can be added to prevent condensation, especially useful in warm, humid or cold weather when fogging is most likely to occur. Comes with 1 year international warranty and 2 years of additional USA warranty. Includes a carry case, strap, two AA batteries, and eyepiece covers. Specifications: Field of View 237 ft./1000 yds., Eye Relief 15 mm, Close Focus 19.7 ft., Weight 42.3 oz., Dimensions (H x W) 7.6 x 6, Weatherproofing-Weather Resistant