I give one copy to the FedEx agent when it's dropped off, and another copy goes into the pouch. They will scan it into the system, unless they lose the sheet (which used to happen a lot, but hasn't happened to me in many years now). I always provide a second copy just in case they do lose it, and I would have an electronic version available.
There's absolutely zero reason to put the brand name on any paperwork, unless it's on a bill of sale.
BTW I think the tariff code you want is this one...
WRIST WATCHES, AUTOMATIC - 9102210000
Sorry to disagree, but I would be packing that box myself (taking a video of it) and not letting anyone else open it or handle the contents.