Anself Hydrogen Rich Water Ionizer Maker Transparent Water Bottle Cup with BPA-free It is leak proof. Romatic colorful light twinkling while electrolytic process. Portable large capacity water bottle cup. Professional in producing a hydrogen rich water. It only takes 6 minutes to produce a cup of hydrogen rich water which can be drunk directly. Made of high borosilicate glass and 304 stainless steel, high quality and safe to use. It comes with an outside non-slip insulated coat to protect your hand from being scalded. Can powered by power adapter, computer or mobile power pack, which is very convenient both at home or need to take it on the go.