Flasche Coffee Cup Features: -With LCD display, real- water temperature is prompted by -304 stainless steel, safe and -12 hours of hot or cold water -Fashionable mirror, by touching the LED screen, you can easily understand the internal temperature of the liquid. You don't have to use your mouth to test the temperature and avoid burns. 360-degree rotation does not need to worry about water leakage, and the sealing is good. -Suitable for easy travel, suitable for outdoor sports, office, beach, school, picnic, hot yoga, hiking, camping, cycling, running, walking, gym, fitness, etc. -Long-lasting heat preservation effect: the vacuum of the cup will hinder heat transfer. Our products are heated in liquids above 42°C for 6 hours and in liquids below 10°C for 5 hours. This is longer than other airless bottles. ( being placed in 100°C water for 24 hours, the temperature will remain around 40°C) Product details: Product name:Vacuum Flask Material: stainless steel, food Size: 20x6.5cm Capacity: 500ML Battery capacity: 2000mAh 3.7V/6.6Wh Input: 5V 0.8A Output: 5V 0.8A Weight: 350g Package Included: 1 Vacuum Flask with LCD display temperature and mobile power supply Note: Do not put the bottom of the cup in water and do not rinse the bottom with water, because the internal electronic components will damage the electronic products.