Multifunctional O3 Generator - The O3 ozone generator is a smart air purifier that can effectively reduce odors in closed environments such as refrigerators, freezers, shoe cabinets, closets, wardrobes, cars, pet rooms, etc. It also extends the shelf life of food by reducing spoilage. Perfect for Fridge Deodorizer - As a refrigerator deodorizer, unlike bags of baking soda and bamboo charcoal which do not only absorb odors, the ozone machine quickly and efficiently circulates active oxygen to every nook and cranny of the refrigerator. Not only does it absorb odors, but it also actively eliminates them. Within hours, you'll discover how great your fridge smells. A cost-effective option - no consumables, no filter changes and reusable! The USB Rechargeable Refrigerator Odor Eliminator is fully automated and maintenance free, saving you time and money! Stop wasting money on charcoal, baking soda, and air fresheners you'll be throwing away in a few weeks. EASY TO USE - This refrigerator odor cleaner with ozone is in perfect condition, ready to use. With just one button, the fridge cleaner can operate in two modes: standard mode (30 days of battery life) and powerful mode (72 hours of battery life). Its built-in rechargeable battery lasts up to 30 days on a full charge.