Meade Mirage Zoom Binoculars 8-16x50mm #125061 has a 50mm diameter with variable magnification of 8 to 16 power using included zoom function. These full size, high quality multi-purpose binoculars with fully multi-coated optics and porro prism design are sure the please the discerning sports fan, outdoor enthusiast or birder. These fine binoculars come complete with nylon carry case, neck strap, and lens cleaning cloth. The handy zoom function lets the viewer control the magnification on the fly, from maximum field of view to maximum magnification. Product carries full one year Meade factory limited warranty. Product weight approximately 27 ounces.