★お得な2-piece set!★ Power on by long-pressing (touch panel) the round sensor on the top of the drink holder. After turning on the power, the cooling and warming functions switch each time you touch the touch panel. Purchased for the back seats. Used without any problems until removed. Used for about a month during the summer season last year. It's convenient because it can cool drinks in the scorching summer heat and warm them in the cold winter. ■ Rapid Cooling Uses aluminum for its thermal conductivity. Can effectively keep beverages at a low temperature. ■ Speed Freezing speed is about 5 times faster than a refrigerator. ■ Long-lasting Warming Thanks to a special vacuum insulation structure, it can keep drinks warm (or cold) for over 24 hours. It's designed to fit in a car's cup holder for easy use in the car. The small and lightweight design makes it easy to carry and use. ■ Easy Operation The car's portable hot & cold cup is easy to operate and has a touch panel switch to control the temperature. You can easily adjust the drink to your desired temperature. ■ Recommended for travel, commuting, picnics, coffee lovers, and for warming (or cooling) drinks for children.