Bushnell Marine binoculars w/rangefinder and illuminated compass 137500 are essential gear for birders, wildlife observers, big game hunters and anyone who enjoys viewing nature. Bushnell 7x50 Marine waterproof 13-7500 with compass binoculars deliver clear images in even the most foul weather conditions from fog, rain and ice to saltwater exposure. The binocular has an internal rangefinder reticle and illuminated compass and is nitrogen purged for reliable waterproof and fog proof performance.