The "Mario series," starring Mario, has sold over 413 million units worldwide (as of the end of March 2022) just for the main action game series, "Super Mario series." Size: ・Uses LR626W lithium battery ・Not waterproof ・Red band ・Band length 22cm, width 1cm Case Material: Alloy Suitable for: Simple design, suitable for any place, gender, or age. A perfect gift for young people, men, women, business people, and students. Included: Comes with a built-in LR626W lithium battery + 1 replacement battery.