The cool box achieves a high line at 230 V as well as a sufficient power at 12 V in my car. Unfortunately I do not know how much power my car socket can deliver. Particularly at 230 V it comes quickly to the set temperature. The box seems to be well insulated, since it does not start very frequently even at 30 C under ambient temperature. A small tip When cooling down or after you have packed some warm goods into the box, cool down to 2 C below the desired temperature, then raise it to the desired value. Then, the compressor and the fan start much less frequently while maintaining the desired temperature, B. 8 C. The fan cost the box a star in product satisfaction as it is slightly noisy. It is large in size and somewhat close to the housing, causing wind noise. When sleeping, she does not disturb in practice. When camping, there are usually secondary noise. Right next to the box would be however uncomfortable. The fan only runs together with the compressor! Not always. There is only minimal heated air from the condenser out of the box blown out by the fan. The surrounding area is not heated unnecessarily by the box when, In the summer it is already warm in the tent or caravan. The operation of the box is simple. With "SET" you can jump through 3 menus where the setpoint temperature, display in C or F as well as the level of the battery-protection can be adjusted with the "UP" and "DOWN" buttons. Whether the battery protection functioned I did not try, because in my car is not relevant, because unfortunately only voltage while the engine is running at the car sockets. The processing is good for camping. It is not a high-end product, but when camping counts rather simple design I find, robustness, functionality and possibly weight. Everything is well fulfilled. Inside can be up to 6 1.5-liter bottles and other goods. In the space below the compressor, particularly delicate goods can be best placed, such as open cuts. Here it is somewhat cooler. A little thing is the pretty bright LED. It lights up to the ceiling. In the tent, I found it all right) As night light so to speak. As a conclusion I recommend the box gladly further. It offers a good alternative to normally more expensive compressor boxes. The technique used for the cold system is of sufficient quality. It is not a compressor of a well-known manufacturer. For sailors the box is interesting because it can be used according to data sheet with up to 30 inclination, without the oil lubrication of the compressor is to tear.