2-in-1 Smart Car Cup Warmer and Cooler

?Energy-saving Design &Temperature Display?Built-in intelligent CPU protection chip with automatic temperature control to prevent excessive car battery power consumption. When using the smart car cup, it will display the current heating or cooling temperature, and you can accurately know the temperature of the beverage you need when heating or cooling the beverage.?Wide Compatibility?Suitable for various materials like aluminum, iron, plastic, glass, etc. Aluminum material is more conductive which would be best for Cooler & Warmer effect, followed by steel, iron, glass, and plastic. This Smart Car Cup allows you have a cool drink or a hot coffee anytime and anywhere. Best gift for Christmas, Thanksgiving Day, Birthday etc.?Easy Use?One-button heating or cooling, plug the adapter of the car cup warmer and cooler to the cigarette lighter directly, just press the heat or cool button according?to?your?need, and press the button again to stop working. When keep cool, blue light on; when keep heat, red light on.

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