State of the art compressor cooling technology lasts up to 2x longer than comparable Thermoelectric cellars. Runs efficiently and quietly, ensuring more consistent temperatures in a wider range of ambient temperatures in your home.DUAL ZONE MAX means the split zone allows you to store and age red wine in the lower zone and set the perfect temperature in the upper zone for white and rosé. Or set both to a single temperature and use it like a single zone wine cooler.