ONE AND ONLY Flask 72 500 ml Bottle  (Pack of 1, Black, Steel)

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. DURABLE KEEP HEAT COLD: The vacuum of cups and cups can block heat transfer. Our products hold liquid heat above 42 ° C for up to 6 hours and liquid cooling below 10 ° C for up to 5 hours. This is longer than other vacuum bottles. Waterproof LED display that can be completely submerged in water. SAFE And HEALTHY MATERIAL: The inner wall is made of 304 grade food grade stainless steel and the outer case is made of high quality 204 stainless steel. ULTRA CAPACITY BATTERY: Lithium battery with large capacity, screen turn off automatically when not in use can reach a battery life of 2 years.