The Sharper Image Wsi-vs100 Automatic Wine Vacuum Sealer, Black Effortlessly keeps unfinished bottles fresher, longer to preserve the original taste, aroma and color of your favorite wines Automatically pumps air out - regulates the optimal pressure for days Easy to read lcd screen displays the sealing status, wine temperature in farenheit or celsius and a day counter to keep you on the perfect path to freshness Attractive, compact design with no slip, no scratch soft touch grip Uses two aaa batteries (not included)