It's a gift card inside a metal box with a plastic insert
The gift card works.  You apply it to your account and have the funds to cover a purchase up to the dollar amount of the value applied to the card.  You cannot add to the card, once it's applied to the account, the card is useless as a form of tender.  I personally have a tool to make guitar picks from cards like these, so I'll make a couple of guitar picks from this one and give them to the kids.  One of the kids loves to play his guitar.  The tin in which it arrives has a cutout with a plastic insert so that the warehouse workers know which card to select to fulfill the order, and that does not hinder my using the tin for other things.  I actually like to see what's inside the box, just like the Amazon staff I guess.
Rating: 5 stars