Product Description: Compatible with Nintendo Switch, Switch Lite, Switch OLED, Wii U, and New 3DS systems. These NFC card tags are super small, the same size as game cards. Easy to carry and convenient to store. You can put it in your bag or even your pocket, saving a lot of space. Get all the cool exclusive costumes and item rewards. Unlimited use on multiple consoles; you can scan all cards once a day. Product features have a certain data loss rate (about 0.25%). If any of the cards are invalid, please contact us. Thank you. This is a third-party NFC card; it is not an original card but functions like the original cards. Card size: 2*3 cm Usage: 1. Finish the first Temple challenge 2. Press "+" at the bottom of the game, select "system--options" 3. Set the amibo option in "use amibo" 4. Put the card on the right joystick Package includes: 24 * Mini NFC game cards for Nintendo Switch / Switch Lite / Switch OLED Size: One Size