This product is not good.sandy smell comes from this u can’t have a glass of water for drinking.earlier the product was good but now it is disgusting for me.try to find other option while purchasing it.Sellers dont take resposibility and only guide u to call at toll free number that doesn’t work or this is not a solution to wait for engineer because it is basic need for a person.immediate product should be change.even I am thinking to file a case in consumer forum that see how smell is coming from this tata swach bulb.