4 color for choosing There are four color for choosing: Milk-White, Black, Pink, Blue High quality materials The 18oz bottle is made of 304 stainless steel with food grade PP. Resistant, corrosion resistant, safe and healthy. LCD DISPLAY and High sensitive temperature sensor 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. Smart Chip and 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. KEEP TEMPERATURE With double layer insulation. This stainless steel water bottle has double insulating wall that optimally keeps the temperature hot and cold.