1. Thermoelectric, CFC free, no compressor 2. Cool and warm 3. Certificate: CE, ROHS, GS, UL,EMC, TUV,ISO 4. Capacity:4L Portable electronic cooling and warming box seriesWith advanced semi-conductor refridgraton technology, the products have characteristics such as no noise, no vibration, long sevice life, low power consumption, environment friendly etc.It can be used for cold storage of foods, ...