... the ambient temperature (25 degrees)Warming: 40-60 degreesThermoelectric, no compressor, CFC/HCFC FREEPortable electronic cooling and warming box seriesWith advanced ... , it is able to preserve temperature.The products are widely used in autos, yachts, restaurants, offices, households and hospitals.Option: ... Quantity: 20GP: 432PCS, 40GP: 864PCS, 40HQ: 1080PCS outdoor portable mini refrigerator 220V 12V