Chaney / AcuRite Hunting & Fishing Activity Meter predicts wildlife activity levels by combining weather observations with lunar positioning data. AcuRite's patented Self-Calibrating Technology provides your personal forecast of 12 to 24 hour weather conditions. Self-Calibrating Forecasting is generated from weather data measured by a sensor you place outside - giving you the most accurate forecast available for your exact location. The bold easy to read LCD screen also includes outdoor temperature with daily and monthly high / low information barometric pressure history moon phase and Intelli-Time clock and calendar. Intelli-Time clock automatically updates itself for Daylight Saving Time. Display stands upright for tabletop use or is wall-mountable. The outdoor sensor features powerful wireless technology weather-resistant construction and an integrated hanger for easy mounting. One-year limited warranty.