The Ozone Purification Technology removes the chemicals and pesticides while retaining its nutritional value,The high voltage electricity generates ozone to kill harmful bacteria, fungus and other pathogens,The Ozoniser restores flavour and taste of the food and extends the life of the food,Keeps meat and seafood fresh and clean by removing odour from them,An automatic timer lets you preset the time 10 to 30 minutes depending on your requirement,No part of this product requires any replacement and it does not have to be serviced either.