A very clever gimmick for learning the identity of a selected card.
Thanks to an invisible device, you will be able to secretly know all cards hidden by the spectator himself in a Bicycle card case.
You will see the selected card as if you were looking through the card case. The spectator will see nothing even though he’s the one holding it!
Watcher is really a must-have close-up tool. It takes only a second to learn the card and you can show the card case on all sides – there’s absolutely nothing to see