The vacuum pump automatically shuts off once all the air has been removed from bags or bottles, ensuring an airtight seal; The device can be powered via a mains adapter or batteries, making it ideal for home use, camping, or travel; Suitable for most standard glass bottles, perfect for sealing wine, juices, or other beverages; Reusable vacuum bags: 2x (22cm x 21cm), 2x (22cm x 31cm), 2x (26cm x 28cm), 2x (26cm x 34cm), 2x (30cm x 34cm)