Wine Preserver, Biaoge Best Wine Gift Automatic Intelligent Vacuum Wine Preserver Wine Saver Pump with 2 x Vacuum Bottle Stoppers - Black 1) AUTOMATIC WINE PRESERVER : Automatically supplementary pumping to always maintain a stable vacuum inside the bottle With dual functions of split or combination, Automatic Tilt Shut-off Feature to ensure the safe useyou can use it to many bottles of wine, and easy cleaning. 2) LCD DISPLAY: With LCD display, convenient and practical,Built-in battery: portable to use, long standby time 3) ELECTRONIC MONITORING: Electronic monitoring, automatically vacuum, built-in vacuum pump 4) TIME RECORDS:Wine storage time records to show the best time to drink,Always shows the updated temperature 5) YOUTUBE SHOW: Copy the Link to show how it work: https://www.youtube.com/watch?v=O73MZGmv6aw&feature=youtu.be