Easy to use: You can insert the cards into the 2 openings and the cards can be shuffled in and out of a single slot and automatically shuffle your cards with a simple push of a button (up to 2 decks). Note: If they don't work, after disassembling and bending the switch contacts and then bending all battery contacts, it will work fine. Automatic card dispenser: Uses innovative gears on each side to evenly and precisely drive the playing cards into the slot in a quick and smooth motion. Powered by 4 AA batteries (not included) Lightweight and convenient: The automatic card shuffler is made of high-quality plastic, durable, sturdy, and lightweight. Battery-operated, which is very convenient. Wide range of uses: The card shuffler is ideal for everything from poker, Texas Hold 'Em, and Blackjack to collectible card games - Fits standard-sized cards. Avoid cheating: With this practical card shuffler, you can now avoid discussions about cheating or insufficient shuffling. Easy to carry electric shuffler, you can use it at home, in the office, or wherever you want