Your food and drinks remain 20° C below the outside temperature, regardless of whether the box is operated via the 12V connection in the car or optionally via a transformer on a normal 230V socket. The improved fan is extremely quiet and will not wake you up at night with its maximum 39 dB (for comparison: in a quiet library there is approx. 40 dB). The Powerbox Plus 28L thermoelectric cooler is antimicrobial. The antimicrobial protection is odour-, fungus- and mould-inhibiting and is part of the inner lining. This means that the effect cannot wear off or weaken over the entire service life of the box. Thanks to its modern shape and thick polypropylene cover, the Powerbox Plus 28L thermoelectric cool box stays cold for hours even when it is not in use.