Rabbit Electric Wine Preserver with Stoppers (Set of 2) These battery-powered wine preserver draws a vacuum of 19hg inside a wine bottle over 10 to 15 seconds, sealing and preserving an opened bottle of wine for up to a week. Designed to fit all bottle types; activates with the push of a button. This set includes two (2) wine stoppers and electric vacuum pump. A counter on the vacuum pump displays the time remaining to achieve a proper seal. These stopper preservers are designed for use with the Rabbit Electric Wine Preserver only.