Enjoy greater energy efficiency, lower noise and longer lasting performance. Digital inverter compressor automatically adjusts its speed in response to cooling demand.Protect the environment with solar panel generated electricity within 100v - 300v voltage range. The current and voltage in the battery is controlled by the solar charge controller. And in the evening, the energy stored in the battery is used by the SPCU to run the refrigerator.An anti bacterial gasket helps keep the door liner clean and prevents fungus and bacteria build-up inside the refrigerator. So everything is more hygienic and food is less likely to go off quickly.