CES1143 Features: * Spotting scope * Fully coated optics * Refractor optical design * Zooms up to 45x * Waterproof * Metal tabletop tripod * Aluminum carrying case * Soft carrying case * Optical design: refractor * Aperture (mm): 0 mm (1.97 in) * Focal length (mm): 303 mm (12 in) * Focal ratio: 6.06 * Magnification 1:15-45x * Highest useful magnification: 118 x * Lowest useful magnification: 7.14 x * Lmiting stellar magnitude: 11 * Resolution (rayleigh): 2.79 arc seconds * Resolution (dawes): 2.32 arc seconds * Light gathering power: 51 x * Angular field of view:2 .5 - 15x, 1.3 - 45x * Linear field of view (1000 m): 43 - 15x, 22 - 45x m (141 ft) * Linear field of view (1000 yds): 130 - 15x, 65 - 45x * Eye relief (mm): 15 - 15x, 11 - 45x mm (0.59 in) * Near focus: 19 ft (5.79 m) Dimensions: * Dimensions: 12"" H x 8"" W x 13.6"" D