Electric Wine Stopper Automatic Vacuum Wine Saver Reusable Bottle For Gifts AUDescription: Easy to use This electric vacuum stopper is intelligent enough that you just need to put it on the bottle to work. It will automatically drain the air out of the bottle and create a vacuum seal to extend the freshness of the wine. Intelligent judgment When the bottle is tilted by > 45, the pumping is automatically stopped to prevent the red wine from being accidentally pumped when drained, and pumping will start again after straightening.