features: 1.easy operation and fine workmanship. 2.humanized design, suitable for all kinds of wine bottle. 3.to prevent the bacteria and bug dust into bottle that keep it clean. 4.pump out the air of bottle to create a vacuum situation that keep the wine fresh for 7days. 5.pour off the wine, and also can feel better when drink. 6.any pantone color of product is available. 7.customized logo imprinting is applicable.