1. Material: stainless steel, high borosilicate 2. Capacity: 420ml 3. Rated voltage: 220V 4. Power: 10W 5. Built-in battery: 1000 mAh lithium battery 6. Charging time: 2-3 hours 7. Size: 7x7x20.7 cm 8. Cup weight: about 483 grams 9. Hydrogen and oxygen separation design, universal for cold and hot water 10. Newly added mineral stone filter element to absorb impurities and remove residual chlorine 11. Stainless steel cup lid and base, safe and sanitary, anti-drop 12. USB charging, convenient and fast
