This is an un-gimmicked duplicate you can use to switch with a gimmicked WOW!, which allows the audience to inspect it.
Just to give you the idea, use something like Himber-wallet to switch gimmicked WOW to un-gimmicked one.

* This product itself does not have any gimmick. In order to perform, you need to purchase gimmicked WOW!, which is sold separately.
** This item does NOT come with instructions.