Stainless Steel Hot and Cold Vacuum Insulated Flask Water| Digital Display Temperature Bottle, Black Double layer walled 500 ml ( SET OF 1)Vacuum insulated bottle that maintains cold drinks for 24 hours and hot drinks for 12 hours. 304 Stainless Steel, food grade quality that washes extremely easy. Place the bottle anywhere and it likely won't fall with our silicone bottom design.SMART THERMOS BOTTLE - Stainless Steel Bottle is equipped with HD LCD touch screen for prompting real-time water temperature display. Let you know the most suitable drink temperature with no need to open the lid.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 to get burn.ULTRA CAPACITY BATTERY: Lithium battery with large capacity, the screen turns off automatically when not in use can reach a battery life . Dont need to worry about battery rechange issues daily.