Thermos DURABLE KEEP HEAT and COLD: Double Wall vacuum cups can block heat transfer. Our products hold liquid heat above 40°C for up to 4-6 hours and liquid cooling below 10°C for up to 5 hours. This is longer than other vacuum bottles.
Intelligent Thermal Insulation Cup with 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.