MACOLAUDER Electric Cooling Cup, 510ml, Peltier Technology, Keeps Drinks Cool from -5°C To 0°C (-5°C To 0°C) or Warms To 50-55°C (50-55°C) by

Rapid Freezing and Heating: Using semiconductor pulp technology, the forward and reverse temperature difference reaches 55°C, 5-10 times faster than the air cooling and heat transfer rate of conventional refrigerators, eliminating the need for long wait times. It also features a cooling function that can cool down to 0°C. To use, simply invert a cup and place water in the refrigeration/heating area. Drinks can be cooled or warmed in minutes. Efficiency: When empty, the thermostatic cup's surface will fog-freeze after 30 seconds of operation, reaching a minimum cooling temperature of around -5°C. Room-temperature water or beer around 30°C can be cooled to between 8-16°C in about 15 minutes, maintaining a sustained freezing temperature of 2-10°C. Touch Operation & Temperature Display: Only one button is required! Simply touch the touch-sensitive button to activate either the warm or cold mode. The LED indicator lights up blue when the drink is cold and red when it is warm. The digital display also shows the temperature, so you can check it at a glance. Large capacity: The 0.51 liter capacity is equivalent to one bottle of purified water and can meet one person's drinking needs. The smart bottle can hold the equivalent of four servings of milk (approximately 120ml per serving). When connected to a 10,000mA portable power source (sold separately), it can provide 3 hours of continuous cooling and 5 hours of continuous warming. Applicable to: beer, beverages, juice, wine, yogurt, coffee, etc. The large diameter design not only makes it easy to clean, but also allows you to quickly enjoy cold or hot drinks.