• Turn your smartphone into a transformation belt. By logging in to the dedicated site and entering the serial code listed on the back of the card, the transformation belt used by the targeted Kamen Rider will play and experience the transformation sound card selection • Introducing the Transformation Sound Card Selection Assortment Set Vol. 1 from this series that won the Japanese Toy Award 2022 High Target Toy Division Excellent Award. 10 assorted new design transformation sound cards • After September 24, 2022 (Sat), there are 10 types of transformation sound cards registered on the official website of "HENSHIN SOUND CARD" and special content that displays special screens and sounds. It will be displayed when 10 types are listed, including those that have been released in the past • This product has a different card design with the "HENSHIN SOUND CARD Kamen Rider No. 1" and the serial code is the same. For HENSHIN SOUND CARD operating environment and recommended browser, please check the official website of "HENSHIN SOUND CARD" • The content communication fee is responsible for the customer. The dedicated site may end up in future. The dedicated website is not an app. The serial code can only be used once per card. Underage should play with this product with parents when using the service