... 4. Cool and Warm 5. CE, ROHS,UL Portable electronic cooling and warming box seriesWith advanced semi-conductor refrigeration technology, the ... tea. It is very easy for use.It has both cooling and warming functions: to make cold drinks in summer, and ... )Warming: 40-60 degreesThermoelectric, no compressor, CFC/HCFC FREE electric cooling and warming car fridges 12V