We have promoted the internal structure of the wine presever and passed hundreds of tests to achieve real anti-leak seal.The wine stopper can keep your wine fresh for up to 10 days,just like you just opened the cork.Easier to use than others "two-part" assembly,just place the vacuum sealer into the top of the bottle, press until you feel the resistance.No extra parts,no batteries,no complexities,that is simple.The bottle sealer can record the time you last opened.Simply turn the dial to point the time you want.It is just a record and won't count down.Made of brushed stainless steel shell and food grade material interior,A ideal gift at the promotional campaign