O3 Pure Fridge Deodorizer Food Preserver and Air Purifier The O3 Pure Fridge Deodorizer extends food life, reduces food spoilage, promotes a clean refrigerator environment and eliminates odors Strategically engineered for high humidity and cold temperatures inside of refrigerators Built in micro CPU intelligently controls the operation cycle & rest modes The O3 Pure Fridge Deodorizer Air Washes the contents of your fridge Eliminates ethylene gas. Full One Year Manufacturer Warranty