YUCCEN Card Shuffler,Automatic Card Shuffler,1/2/4/6 Decks Battery-Operated,Portable Electric Card Shuffler Machine,UNO Card Shuffler,Playing Card Shuffler,Poker Card Shuffler YUCEEN Electric Automatic Card Shuffler is absolutely your perfect choice.With two power model : battery powered and USB-C,just 2 steps to shuffle any standard cards,quickly and gently.Safe and simple to use,ABS plastic material, durable and sturdy. How to use? Two steps: Fist:Install the battery Second:place the card on both sides, press the button until the end of shuffling Product Dimension: 2 Decks:8.07''(L) x 3.74''(W) x 3.75''(H) 4 Decks:8.26"(L) x 3.74"(W) x 4.92"(H) 6 Decks:8.26"(L) x 3.74"(W) x 7.67"(H) Battery model: 2 Decks:4 AA battery (not inclueded) 4 Decks:4 AA battery (not inclueded) 6 Decks:4 1.5v C/LR14 battery (not inclueded)