Features: 1Meet all Your Vacuum Sealing Requirements: Vacuum sealer kit for cans comes with electric vacuum sealers including wide sealer and standard sealer 5 wide Mason caps and 5 Standard Mason caps (reusable Mason caps) 1 usb cable 1 bottle cap opener and 1 user manual. Meet the needs of each family. 2Easy to Use and Hands Free: Our tanks are fully electric upgrade mode avoiding the hassle of using spare parts hose. Without manual pressure center the electric vacuum seal and firmly press it against the fuel tank cap. Click the button and wait more than 10 seconds to complete. Easy to operate hands free saving busy home cooks time. 3Rechargeable Portable Vacuum Pump: Different from the traditional vacuum pump the vacuum machine has strong suction full automatic fast and convenient and strong practicability. USB charging design wireless and electric portable and light does not take up extra space let you travel or picnic with you easier to keep fresh and sealed. 4Keep Food Fresher and Longer: Vacuum sealers are made of high density ABS plastic. It creates a vacuum environment for your food which can remove the air in the tank in a short time extending the shelf life of the food. The invention avoids the food being invaded by moisture thus causing the food to produce odor. 5Tip: To ensure a nice seal do not fill the jar with liquid food and make sure the lid is dry. Too much liquid will cause the air pressure difference between the inside and outside of the jar to be too small causing the jar to not work properly. Specification: Item Type: Electric Mason Jar Vacuum Sealer KitWeight: 480g/16.9ozMaterial: ABS and PCBBattery Model: 18650 lithium batteryBattery Capacity: 2000mAhSize: 104 x 94mm/4.1 x 3.7in Package List: 1 x Sealing Machine5 x Large Mason Lid5 x Small Mason Lid1 x Data Cable1 x Instruction Manual