ITEM NAME:Portable Hydrogen Rich Water Maker Ionizer Generator Bottle Cup Xmas Gifts X1Z3 Portable Hydrogen Rich Water Maker Ionizer Generator Bottle Cup Xmas Gifts X1Z3 Product Name: Oxygen-rich water cup water glass Capacity about: 400ML Battery capacity: 1000MAH Working time: 3min Charging time: 2-3 hours Size about: 27.5*10.5*9.5cm Material: glass + stainless steel Color: transparent Package contents: 1* water cup (with built-in battery) 1* USB charging cable