It does absolutely nothing. The rotor spins and the cards stay as they are. At first I thought, maybe I should press it a little to get the cards.. In the end, all I managed to do was to strain the rotor with no result. Cheap, poor construction. Also, in the description it says it is from a well-known company, which of course is not mentioned anywhere on the product, as it is from the depths of China. I do not recommend it under any circumstances. It really doesn't even deserve one star. It's better to give someone their money's worth, let them shuffle themselves

Excellent choice of mixer. In all card games, we get bored of shuffling the deck and sometimes we don't do it correctly. This particular machine solves your problem. It shuffles up to two decks at the same time. Small and spacious, it does its job perfectly. It operates with batteries but also with a USB cable. 4 stars because it seems cheaply made, but time will tell.