The pre-owned or refurbished product is professionally tested and certified to work. Amazon Renewed is the destination for preowned, refurbished products. Customers buy a new product and then return it or trade it in for a better model. Amazon-qualified suppliers inspect and test the product to make sure it works and looks new. The product is then listed on Amazon as an Amazon Renewed product. You can return or exchange your product if you are not satisfied with the purchase.