This is a cool effect that requires some set up before hand and specific bottles to perform. In a perfect world this effect could be done anywhere at anytime with any bottle, but we don't live in that perfect world, and this is as close to a perfect sealed bottle trick that I've seen. It's fun to play with, and looks clean and gets some great reactions.

The effect is nice but in order to perform with sealed bottle, you need to purchase a tool and you need to prepare it at home and bring it to wherever you want to perform, this is the major downside of this trick, especially for hobbyist because I don't feel convenient to bring my own beer along when I go pub with friends. Being said that, I don't mind performing it with a non-sealed bottle, it doesn't really matter.

Sometimes the lighting can be an issue too, if the environment is too dark (in some pub/club), it is quite hard for your audiences to see the cap in the liquid.

This is AMAZING so simple yet amazing this by far has been the best thing since...... God knows! It looks great! BUY IT!

If you are allowed to have a drink and hit the clubs and bars you will instantly gain reputation. I preformed this effect only this weekend and blew away all of those who watched. 4 stars because you have to do a little more purchasing if you want to sell the effect to your audience. A must buy and great street/bar effect.