The vacuum pump automatically turns off once all the air has been removed, ensuring maximum ease of use, The device can be powered by a mains adapter or batteries (perfect for camping and travel), Fits most standard glass bottles – perfect for wine, juices, and other beverages; 10 reusable vacuum bags in various sizes: 2x (22cm x 21cm), 2x (22cm x 31cm), 2x (26cm x 28cm), 2x (26cm x 34cm), 2x (30cm x 34cm)