Although it is new and unused, the outer box has deteriorated slightly due to being stored at home. This product allows you to easily make and drink hydrogen water from commercially available bottled mineral water anytime, anywhere, in just a few minutes. The Magic Shake is the only portable hydrogen generator with a slim body that can produce hydrogen using dry cell batteries. Moreover, it's a groundbreaking item that turns water into hydrogen water in just 3 minutes. It preserves the mineral content and dissolves hydrogen for a long time, maintaining a neutral pH and not altering the taste of the mineral water. Model number: MS-5 Body size: 34mm x 212mm Weight: Approximately 164g / Approximately 320g (without batteries) Battery type: 3 AAA batteries (sold separately) Please understand this before purchasing!