1.USB powered 2.Can be used on car 3.Popular design 4.Customized logo can be printed ... order to avoid appearance of scratches. 4. When the cup is heated state, the heating zone is heated items must ... heating mat in a cooling state, normal operation, when the cup is heated state, the fan will automatically stop working, it ... in full bloom of your goods. mini usb fridge,car refrigerator,mini usb connector