
Easy to use, dependable, never been disapointed. First it covers your wine in a blanket of Argon, then when you want a glass, twist open the top, as you pour you can hear the stopper working. Keep your wine safe for two or three weeks.
Works just fair. The stoppers do not seem to fit tightly in about 50% of normal 750 ml bottles. No way to tell if gas is released when opening to pour, do hear a rush so presume you lose gas. Gas cartridges only last for about 3 bottles of wine.