Sunsbell Golf Rangefinder Zoom 7x18 Yardage Range Finder Mini Compact Monocular 7 Times magnification with 462 ft, field of view at 1000 yards A precision optical instrument designed for finding the distance between you and the flag; Ruby coated optical lens with UV protection. Two operational modes: Green mode &general mode Easy to use, With a full view of the flag stick, just align the digital range marks with the pin, press a button and the distance in yards will display automatically. It uses precise optics and digital technology to measure distances. There are two modes of operation: Green Mode and General Mode. It is a very safe device of distance measuring, without any energy radiation. There is no any damage and destruction to the human body in the activity of distance measurement. Ideal for play golf, water sports, outdoor activities, bird watching, walking, climbing, travel