EHM Electronic "H-Pitcher" Hydrogen Alkaline Water Ionizer Generator Flask. EHM Makes great-tasting Hydrogen Alkaline Ionized Water EHM * Voted NO#1 by Alkaline Water Machine Reviews. Makes great-tasting Hydrogen Alkaline Ionized water Hydrogen rich water is easy to absorb and can help to boost your metabolism and reduce fatigue. 304 Food Grade stainless steel, high quality and safe to use. Portable and can be used any where Operates on rechargeable battery with USB power adapter. With a USB cable, it can be charged by a computer or a cell phone USB charger, convenient to use.