Epicureanist s Automatic Vacuum Sealer is designed to fit most standard 750ml wine bottles and will vacuum seal bottles for more effective wine storage. It provides the perfect combination of function and style, while helping to keep your wine fresh and to let you know your wine s temperature. Always serve and preserve your wine at just the right temperature. Simply insert in an opened bottle, secure and vacuum with automatically start. Vacuum pump device will suction the excess air out of your bottle to help prevent oxidizing and keep your wine fresh between uses. Features: Electronic wine bottle vacuum sealer Easy-to-read backlit LCD Works automatically to pump air out of bottles Fits most standard 750ml bottles Celsius or Fahrenheit temperature display Requires 2 AAA batteries Dimensions: 4.25H x 1.75 Dia.