The product is authentic and good quality, however, the seller shipped a faulty watch to me.
After returning it for a repair, it was shipped back and claimed to be repaired. The watch still did not work. I cannot send it in for another repair and amazon has not helped at all in this matter, so I have been forced to repair it elsewhere and pay for it myself.
I highly encourage you to be wary of this seller, as well as amazon on a whole.