LCD DISPLAY: 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. KEEP TEMPERATURE:With double layer insulation. This stainless steel water bottle has double insulating wall that optimally keeps the temperature hot and cold. 304 STAINLESS STEEL:The 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. NO CHARGING NECESSARY:The built-in battery does not need to be charged. The lid is waterproof (The lid can be rinsed but not soaked in water.) And the bottle Keep the temperature for up to 12 hours. EXTENDED APPLICATIONS: 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.