【Vacuum Sealing】 Our vacuum machine does not have any spare parts, just press and hold to start to activate the vacuum mode, which can free both hands. The mason jar vacuum sealer kit is equipped with an electric vacuum sealing machine, 5 * wide mouth Mason can caps, and 5 * standard mouth Mason can caps (Mason bottle caps can be reused), 1 * Type-C cable, 1 * bottle cap opener, and 1 * user manual. 【Portable Mason Jar Vacuum Sealer】The Mason jar sealing machine adopts a portable design, changing the weight of previous bulky sealing machines. It requires minimal space and provides effortless portability. Easy to operate, hands free, and saves time for busy family chefs. It allows you to carry it with you during travel or picnics, making it easier to keep it fresh and sealed. 【Rechargeable & High Capacity】This Electric Mason Jar Vacuum Sealer adopts a fully electric upgrade mode, equipped with a high capacity battery, wireless electric, and easy vacuum sealing. Equipped with Type-C charging cable, it can provide convenient charging. Equipped with a built-in LED large screen, it ensures clear and visible battery status and working time. It is the perfect companion for outdoor activities such as travel, camping, or picnics. 【Keep Food Fresh】The Snuuoby Mason Jar vacuum sealing machine is made of high-density ABS plastic. Create a vacuum environment for your food, which can quickly eliminate the air in the jar, block the air, and preserve the quality of your food, leading to food odor. 【Warm Tips】To ensure a good seal, do not overfill the Mason jars with liquid food and make sure the lids are dry. Too much liquid will cause too little difference in air pressure between the inside and outside of the jar, resulting in a failure to seal properly.