The wine pump is working fine and looks very elegant. The wine can also be a couple of days last longer and taste the next day still great! White wine nihct forget to refrigerate while the red wine can be outside. There is a model, not by WMF and does not look as elegant, which can not only create a vacuum, but also can make a positive pressure in the bottle to be kept longer sparkling wines (sparkling wine, Prosecco, Champagne). This model can not, unfortunately. For this, the processing is just great.