2 working modes: This rechargeable odour neutraliser has 2 working modes, fresh mode and deep mode. Fresh mode has a battery life of 30 days for daily deodorisation, working for 10 minutes every 40 minutes. Deep mode has a battery life of 3 days for quick and thorough removal of unpleasant odours, working for 30 minutes every 60 minutes. Quick odour removal: The USB fridge deodoriser takes only 10 minutes to deodorise odours and can also extend the shelf life of fruit and vegetables by 7 days. Large capacity refrigerators can be purchased with more than one for better deodorisation. Food preservation: Inhibits harmful molecule growth and ripening agents such as ethylene, keeping fruit and vegetables fresher for longer. This refrigerator air freshener is perfect for maintaining a fresh-smelling refrigerator and also acts as a superior mould freshener. Smart Air Purifier: The mini ozone generator is an intelligent air purifier that quickly releases active oxygen, which decomposes into harmless oxygen and water and circulates in a closed space to renew the gas. The elimination of odours reduces food spoilage and keeps food and vegetables fresh for longer and cleans your refrigerator well. Versatile use: The odour remover machine is ideal for use in drawers, shoe cupboards, storage compartments, cars, sports bags and suitcases. Its compact size ensures that it fits anywhere, providing fresh air wherever it is needed and acting as a reliable car odour remover