Our "Big-Eye" Binoculars from China are the most powerful binoculars available for under $4,000. They feature a huge 80mm lens with 25X and 40X magnification eyepieces (changing from one to the other requires just a quick twist), resulting in a much wider field of view than any recreational binocular or telescope available. The extra-large prisms keep the light-transmittal value high all the way to the eyepiece resulting in a distortion-free, clear and well-illuminated image. The "Big-Eyes" come complete with an azimuth indicator, polarizing and haze filters, a tripod easily adjusted for floor or tabletop use, and a carrying case.