Anybody with a common sense would know that to produce anyting you will reject carbone. And to move them around the globe to sell it, even more so. Anybody claming that a product is carbone neutral is bullshitting. This include Bitcoin mining by the way, the only difference is that not producing a shitty useless gadget will always save some CO2 in total, while not mining Bitcoin might end up with more CO2 in certain cases. And it has a real utility unlike a watch.