Kowa TSN-770 Series Straight Body High Performance Spotting Scope with PROMINAR XD Lens, 77 mm Green High-performance 77mm spotting scope with a rugged construction and high-end specifications that make it perfect for bird watchers, hunters and target shooters Constructed of strong, lightweight polycarbonate materials, with a rigid structure that can endure hard usage and a shape and rubberized coating for ease of handling and ergonomic fit Waterproof to JIS class 7 protection standards and filled with dry nitrogen gas to prevent the lens from fogging, for use in the rain and other harsh weather conditions Features the option of several eyepieces (sold separately) to fit most any spotting need or preference 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