You can change your registered email address and password from the SEIBU Smile ID My Page.
Other SEIBU PRINCE CLUB membership information can be updated from SEIBU PRINCE CLUB My Page under ""Edit Member Information.""
For changes to registered details such as address or name for SEIBU PRINCE CLUB Card (Saison members), please complete the procedure yourself at the Saison Information Center — SEIBU PRINCE CLUB Saison Desk."