Rangefinder binocular is a combined device of both a binocular and a rangefinder. The binocular will provide clear, distant vision while the rangefinder will calculate and show you the approximate distance of a targeted object from the point you are viewing. Due to the fact that both of these devices complement each other to provide a better hunting experience, rangefinder binoculars have been getting serious attention among the hunting tribes. Most rangefinders work based on the laser beam technology basis. Highly energized laser beam will be emitted from the binocular to a targeted object and once the emitted laser beam is reflected back to the binocular, the distance of the object can be calculated by measuring the time of transmission.