Deerhunter's Edge Hunting Predictor, Green Know the best time to hunt, pocket computer that predicts deer/elk activity using solunar data Patented algorithm for current animal activity forecast, 4 hour activity future cast, 16 hour barometric history graph, 12 - 24 hour weather forecast Solunar data and sunrise/sunset times thru 2099, digital compass, severe storm alarm, backlit display, altimeter to 29,000 ft. Approved by the North American Fishing and Hunting Clubs after field testing Perfect for the "scientific" outdoorsman interested in the relationship between animals, weather and sun/moon phase Shows temperature and barometric pressure, comes with one year warranty and carry pouch Uses replaceable lithium batteries