MMRM Mini Digital Golf Range Finder Golfscope Scope Yards Measure Distance - 7X Magnification It uses precise optics and digital technology to measure distances Two modes of operation: Green Mode and General Mode A safe device of distance measuring, without any energy radiation 7 times magnification with 462 ft. field of view at 1000 yards The general mode can be used in other situations, it can calculate the distance between you and the target you desired