1.Strong Battery Life The mason jar capping machine is equipped with a 1200mAh large capacity battery and comes with a TypeC power cord. The battery life is up to 30 days after a full charge, and the long standby time can meet your daily use needs. 2.Easy Operation The mason jar capping machine is very easy to use and can be used easily in just 3 steps 1. Put the food in the glass bottle and cover it with the iron lid. 2. Align the electric mason jar capping machine with the opening of the Meijer jar and then press down horizontally. The electric glass bottle capping machine starts vacuum work. 3.Electric vacuum sealer machine: the electric glass capping machine starts with a push of a button, your hands, just press the button to seal the mason jars perfectly 4.GOOD HELPER IN KITCHEN The electric mason jar sealing kit can remove the air in the mason jar, thus extending the shelf life of food, allowing you to enjoy the fresh taste of food. It is a must have for home kitchen