Large screen smart temperature display. Easy to understand the internal temperature of the liquid by touching the LED screen. It is not necessary to pass the mouth to check the temperature and avoid burns. 360-degree rotation does not have to worry about water leaks, and sealing is good. With double-layer insulation. This stainless steel water bottle has a double insulating wall that optimally keeps the temperature hot and cold. The 18oz bottle is made of 304 stainless steel with food-grade PP. Resistant, corrosion resistant, safe and healthy. Of course, it reaches the FDA consumption standard and is 100% BPA-free.  The built-in battery does not need to be charged. The lid is waterproof (The lid can be rinsed but not soaked in water.) This Vacuum Insulated Coffee Mug can keep beverages cold for up to 24 hours and keep them hot for at least 12 hours. Enjoy iced coffee in the hot summer and drink warm coffee or hot tea in the cold winter, that will be a great gift for females. The smart water bottle is ideal for easy travel, perfect for outdoor sports, work, beach, school, office, picnic, yoga, hiking, camping, cycling, running, etc. Simple and practical, it is the best gift for friends, family, children, sons and daughters.