The RXB-IV is a top-quality 9x32mm binocular that incorporates the additional benefit of a state-of-the-art laser rangefinder capable of instantaneously and accurately measuring the distance of a deer-sized animal from 10 yards to 700 yards, an inanimate object from 10 yards to 800 yards, and a reflective target from 10 yards to 1,500 yards. It emits a series of invisible, infrared energy pulses that are reflected off the selected target back to the optical unit. State-of-the-art circuitry and precision computing circuits are used to calculate the distance instantaneously by measuring the time it takes for each pulse to travel from the RXB-IV to the object and back.