Product Description Electric Mason jar vacuum sealing machine can meet all your vacuum sealing needs. We know what you need: Small and Portable, Strong Endirance, Easy to use, Durable & Reusable. How to Use 1. Put the food into the Mason Jar and cover it with the iron lid. 2. Align the electric mason jar sealer with the mouth of the regular-mouth mason jar and press down horizontally into place. 3. Click the button, and the electric Mason Jar sealer starts to vacuum. (The display area will display the working time, 20 seconds or more is recommended. 4.Click the button to stop working. Package List: Electric mason jar vacuum sealer, 5* Regular mouth canning lids and 5* Wide mouth canning lids, Bottle top opener, Type-C charging cable.