Review on XGeek 6.5X Laser Rangefinder: 7 Modes for Hunting/Golf with USB Charging - 600/1000 Yards Three Lenses Laser Range Finder for Archery, Shooting, Golf, Hunting by David Herman

This product is very easy to use. You can use the eyepiece to focus on an object you want to see your distance from. Aim and shoot and it will give you a range finder. It has other golf calculation modes and a few other modes I have yet to try, but it's good for what I bought it for.