Doshisha's AQUA-H Hydrogen Water Generator for the Bath Model: AH-HF1601PK This item was received as a prize a few years ago. It is unused, but has been opened to check the contents. Please understand that this is a stored item before purchasing. ● Easy process: Simply set the magnesium and add citric acid ● Can be used without electricity ● Hydrogen generation: 1000ppb or more (according to the manufacturer) Product Information 【Specifications】 Product dimensions (approx.) ... W204*D152*H191mm Body weight (approx.) ... 920kg (including 3 magnesium cores) Magnesium core ... Purity: approx. 99.9% * 3 Accessories ... Magnesium core, Citric acid bottle, instruction manual/warranty #Doshisha #HydrogenGenerator