Zeiss Carl Optical Inc Monocular (5x10 T MiniQuick) Carl Zeiss monoculars provide remarkably crisp, bright image quality and large fields of view, encased in sleek, elegant profile Compact, go-anywhere 5x10 MiniQuick model is no larger or heavier than a fountain pen, and includes handy pocket clip Patented T* anti-reflective multi-coating and non-slip housing 5X magnification, ten-millimeter objective diameter, two-millimeter exit pupil, and 16.5-millimeter eye relief; weather-proof housing sealed against water spray; 4.5 inches long; lightweight 0.8-ounce weight Carl Zeiss products include warranties of lifetime on optical components; five years on electronic components; two years on camera components; and one year on carrying straps, lens caps, and similar accessories