This thermos cup has waterproof capacities full-screen touch LED screen, is More sensitive to touch, and easily understands the inside temperature of the liquid. You do not have to pass your mouth to test the temperature and avoid burns. Invert the cup and contact the water with the lid, it can test the temperature more accurately. There is no water, the display of the smart mug shows the weather temperature at that time. This smart water bottle flasks cup has a large capacity button battery that can be used 50,000+ times and no need to charge. LED touch screen of vacuum cup flasks will automatically turn off in 3-4 seconds, have low energy consumption, and reach 1800 days of battery life. Each drinking bottle is completely leakproof with an easy-to-open twist-on cap.