1.latest ultra efficient german technology compressor. 2.can run on 12v/24v dc. 3.can set temperature from an ice cold -19°c and up to +10°c. 4.perfect for tropical climate, can even refrigerate in blistering hot temp up to 50°c. 5.cfc-free refrigerant r134a. 6.suitable for solar power supply operation. 7.use for camping&outdoor, car, 4wd, motorhomes, rv, caravan,truck, automotive,boat, marine,home.