Using your Digimon Vital Brace BE set is easy! First, put on either the gray or brown wristband - it's up to you which one you like best. The Vital Brace BE is the main piece. You can interact with it and explore all the Digimon features. The 25th Anniversary Dim Card can be used within the Brace BE to unlock special content. And don't forget to check out the DIGIMON EVOLUTION book to learn more about the Digimon world. When it comes to maintenance, keep the Brace BE and wristbands clean. Wipe them gently with a soft cloth if they get dirty. Avoid exposing the Brace BE to extreme heat, cold, or moisture, as this could damage it. Have a great time with your Digimon set!