I got this when researching dice gimmicks for the soul purpose of having an out if my mental dice failed during a performance. I really didn’t have high expectations for this product due to it being a magic trick for beginners, and the fact that it looks like something you’d find in a child’s magic kit. However the trick is rather ingenious to be honest. The method is very clever and works perfectly without electronics 99% of the time. The only reason it would fail is if you didn’t follow the simple instructions. I showed it to my wife who knows every secret about my props and routines, and she couldn’t figure it out at all and thought it was a cleverly hidden electronic device. It looks cheep at first but if you think about it, it looks like it’s a dice shaker from a board game. So I don’t think it’s suspicious at all. This is 5 stars for the price and simple method. I’m completely satisfied with this purchase! Well done!