Descriptions: The use of tower-type wind collection multiplier first structure design, in a limited space to maximize the use of fan blade area, while the collection of wind cover booster design, the wind in the duct concentrated blowing to the center of the hot aluminum, to play a better cooling cooling effect! 12V/24V Smart Temperature Control Travel Coffee Mug Please Notes on the use of hot and cold cups. *Smart cooling and heating cup holder with intelligent technology.Special designed to heat beverages and refrigerated beverages on car cigarette lighters. *Made of high quality ABS, aluminum with good insulation and durability. *Perfect fits for drivers, enjoy a Hot coffee or water on the way Or Cool drinks and beverages on the way. *Easy to apply, one-button heating and one-button cooling. Heat up and cool down quickly,can be raised to 58C-72C or reduced to -3C-5C. *Widely application, can be used in Car 12 V/24V,Office,Home,Hotel etc. Notice: When using the hot and cold cup in the car, please install the base at the bottom of the machine so that the machine can better dissipate heat, so as not to reduce the effect of the product due to three problems. When using the hot and cold cup in the car, it is recommended to use a flat-bottomed metal container as far as possible, as this product belongs to the conductive heating and cooling, so it is more effective to use a metal container. If you are not using a metal container when using a hot and cold cup, the effect will be slower, because this product belongs to the conductive refrigeration heating, so the effect will be slower than the metal container, please unders