Please consider this as a collectible or toy. The display does not show up even when the button is pressed, likely due to a dead battery. (Battery replacement not possible) - Brand: Japan Post Bank (Yucho Bank) - Item Type: One-Time Password Card - Color: Green - Number of Keys: 10 keys (0-9) Please refrain from purchasing if you are concerned about minor details, as this item has been stored at home. No comments are necessary. You can purchase immediately. Please check the profile for details. Thank you for viewing.