Premium 2-in-1 Car Cup Cooler/Heater can be used in both hot and cold seasons. It is best to keep your water bottles cold in summer. It is easily connected by a cigarette lighter by adapter cable in your cars.
It contains two press buttons, the blue led light for cold mode, coolest up to 21℉ and red led light for a hot mode which heats up to 140℉. You can enjoy your hot coffee in winter and cold beverages in summers while traveling.
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