Main Features
● Made of stainless steel, PP, and PC
● Intelligent sense of the water temperature with sensitive temperature sensor 
● Energy-saving OLED display screen, easy to know the water temperature, gives you warm companion 
● Power source: 1 x CR2032 button battery ( not included )
● Streamlined body design, convenient and comfortable to hold
● Refined vacuum technology, keeps water warm or cold for over 6 hours