Hydrogen generating device New, unopened, set of 2 Aqua Bank Hydro Disk, unused Hydrogen generation, retail price 5980 yen/piece Although there are some markings on the box for inventory management, these are new and unused items. It's for water servers, but it seems like it can also be used in pots and baths! Will be shipped without the box via Yuu Yuu Mercari delivery.