Stainless steel vacuum hot and cold with temperature reader

The test of the effect to keep warm/cool1.When 90 degrees of water is placed in an Thermos Flask and the lid is tightened, it will turn into 65 degrees after 6 hours and 50 degrees after 12 hours.2.When 2 degrees of water is placed in an Thermos Flask and the lid is tightened, it will turn into 5 degrees after 6 hours and 10 degrees after 12 hours.
Attention1.Avoid falling from high places to avoid damage to the insulation structure.2.Filled with water should not be too full to prevent overflow burns.3.It is not recommended to hold acidic and corrosive liquids in the vacuum flask.4.Because there is a sensor on the cup lid to display the temperature, if there is very little water in the cup, it is necessary to invert the cup and let the water come into contact with the cup lid, and then touch to display the temperature.5.The product is measured manually, with an error of 1-2 centimeters, which is within the normal range.