Compressor cooler for refrigeration and deep freezing. Gross capacity approx 23 litres (19 litres for refrigeratioin / deep freezing, 4 Litres for fresh food) Voltage 12 / 24volts DC. Power input approx 35 watts. Current consumption: Power input x average running time. Temperature range: +10 oC to -18 oC, variable via electrical thermostat.