Character: Kamen Rider Series, Kamen Rider Specter, Kamen Rider Saber Instant purchase OK The "DX Specter Gekiko Senki Wonder Ride Book" activates sound effects when the button on the main unit is pressed. When set on the separately sold "Transformation Belt DX Seiken Swordriver" and a sword is drawn, the pages open, and the transformation sound for Kamen Rider Blaze Specter Gekiko Senki is activated. If you have any questions, please ask in the comments section. Kamen Rider / Series: Kamen Rider Saber Item/Type: Transformation Item Belt Name/DX: Seiken Swordriver Wonder Ride Book: Specter Gekiko Senki