Features:-It only takes 3 minutes to produce a cup of hydrogen rich water which can be drunk directly. Can improve cellular health and enhance better nutrient absorption in the body,Improvement of blood glucose and HbA1c levels in diabetes.-Made of high borosilicate glass, high quality and safe to use.-With charging indicator light, the red light of the water cup flashes when there is no power, the light is red when charging, and the light is green (some blue lights) when fully charged.Notice: -This item is working for tap water, mineral water, well water. Please don't use pure water, because pure water cannot be electrolyzed. When making hydrogen, it is necessary to open the lid of the cup, otherwise there will be a slight odor.-The water temperatu.