Kowa Prominar ED 66mm Scope The 66mm diameter objective lens has more than 120% light gathering power of the 60mm objective lens. Compact and Light Weight - Kowa 66 main body length of about 30cm and weight of only 1 kg. Fully Water Proof Body is completely sealed and fully water-proof. Nitrogen gas purged to prevent the lens of the Spotting Scope from fogging. PROMINAR XD objective lenses (extra-low Dispersion, previously the Prominar ED Glass line) provide even higher optical performance Body only, eyepieces not included High-performance 66mm spotting scope with a rugged construction, high-end specifications Constructed of strong, lightweight polycarbonate materials, with a rigid structure that can endure hard usage Waterproof to JIS class 7 protection standards, and filled with dry nitrogen gas to prevent the lens from fogging Features an angled eyepiece for comfortable long, and high-angle use Weighs 53.6 ounces, measures 13.5 inches in length. Backed by the manufacturer's Limited Lifetime Warranty when purchased only from Authorized North American Dealers