I returned mine because there were clear signs the package had been opened and the product had been used, there were even stains in the included cook book (yikes, I thought). Galaxus/digitec offered a rebate of CHF 50.- or an exchange. I got an exchange. The exchanged product did not show any signs of previous use. In the manual, though, there is a note that these units are "nachgerüstet" with something. I don't know what this exactly means. Sounds they had been fabricated and then later upgraded in some way.