... EMC, TUV,ISO 4. Capacity:4L Portable electronic cooling and warming box seriesWith advanced semi-conductor refridgraton technology ... consumption, environment friendly etc.It can be used for cold storage of foods, beverage, fruites, drinks, ... and tea. It is very easy for use.It has both cooling and warming functions: to make ... : 2800 PCS 4L DC 12V blue mini fridge for car /cooler & warmer/ cooling box