Enjoy Wine for Weeks: Pour from the same perfectly preserved bottle for up to 4 weeks, thanks to the proprietary Coravin Pure Sparkling CO2 Capsules Effervescent Preservation: Preserve the crisp flavor and bubbles of your favorite sparkling wines with the Coravin Sparkling Wine Preservation System Versatile Stopper: Adjusts to fit any standard or magnum bottle and locks securely in place with the patent-pending Sparkling Stopper Wine Stays Fresh: The Sparkling Charger has an internal regulator that stops charging the bottle when the appropriate pressure has been reached