This sparkling water maker is equipped with a 60L steel cylinder featuring a standard Tr21-4 threaded connection. Since the product does not include gas, you will need to refill it yourself.
You can request a trade-in at your local partner retail store; the refill fee is approximately $15–$20 per refill. Alternatively, visit a local specialty gas station or homebrewing supply store to refill with food-grade carbon dioxide; a single refill typically costs only a few to a dozen dollars.
By vevor