ZOKOP mini fridge has the switch from heating to cooling. Cooling capacity: 32.4oF below ambient temperature. Warming capacity: 140oF-149oF. When cooling, the green indicator on, when heating, the red indicator on. Easy to go from indoor 120V (AC) to car use by plugging the appliance into the car cigarette 12V (DC) adapter. Also great for use on boats, RVs and while camping or picnicking.