Water Bottle Smart LED Temperature Display Stainless Steel Vacuum Flask Water Bottle Large electronic displayTravel & To-Go Drinking portable, durable travel Mugs, thermos Insulated Water Bottle, 500ml LED Temperature Display Smart Water Cup, Stainless Steel Vacuum Drink Flasks, Hot & Cold liquid content, Sport Drink Bottle for Cycling, Gym, Home, Office【WATERPROOF LED DISPLAY】 : Waterproof LED display that can be completely submerged in water. Just touch the LED screen and the temperature of the liquid will show on the LED screen. You do not have to test the temperature with your mouth or risk getting burn.【DURABLE KEEP HEAT COLD】: The Water Bottle thermos vacuum of cups and cups can block heat transfer. Our products CAN hold liquid heat above 42 °C for up to 6 hours and liquid cooling below 10 ° C for up to 5 hours. ( This is subject to weather temperature and how often the cup is opened and if it is tightly closed)【ULTRA CAPACITY BATTERY】 : Lithium battery with large capacity, screen turn off automatically when not in use can reach a battery life of UP TO 2 years. Cup lid with built-in battery (non-removable).【WIDE APPLICATIONS】 : Water Bottle with the state-of-the-art double-wall thermos vacuum technology, this mug is stylish and durable. Whether you are traveling, at home, in the office or outdoor - the ideal companion. Simple and practical, it is the best gift for friends, family & colleagues.