All products are covered with a guarantee according to Legislative Decree 206/2005 “Consumer Code”. (see link)
The seller is responsible, pursuant to Article 130, when the lack of conformity occurs within two years of delivery of the goods.
The consumer loses the rights provided for in Article 130, paragraph 2, if he does not report the lack of conformity to the seller within two months from the date on which he discovered the defect. The complaint is not necessary if the seller has recognized the existence of the defect.

Sostituzione del prodotto 
La sostituzione avviene riavendo il prodotto che presenta conformità con la restituzione dello stesso prodotto.