After the change you can show the card on both sides - it looks to be a normal Bicycle playing card. However, you won’t be able to hand out the card for examination.
The gimmicked card is well made and passes for a normal card. And the prop is easy to use so it’s great for beginners. Also, the instructions are clear and easy to follow.
"Blink" is basically a color change - the replacement of one card for another, which is accomplished through mechanical means. Those who are experienced with cards will have sleight-based techniques for creating crowd pleasing changes. But for an open and fast change that is easy to perform, "Blink" is well worth it.

