Zeiss Carl Optical Inc Monocular (8x20 T Monocular) Carl Zeiss monoculars provide remarkably crisp, bright image quality and large fields of view, encased in sleek, elegant profile 8x20 T model is compact mini-telescope ideal for traveling, sporting and cultural events, and outdoor applications Patented T* anti-reflective multi-coating and non-slip housing; comes with leather pouch and carrying strap 8X magnification, 20-millimeter objective diameter, 2.5-millimeter exit pupil, and 15-millimeter eye relief; weather-proof housing sealed against water spray; 3.7 inches long; 2.7-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