Rechargeable BatteryThis Mason jar vacuum sealer is equipped with a Rechargeable battery, which only takes about 3 hours to fully charge the device (please use the included USB cable). After being fully charged, it can perform 350 consecutive vacuum seals. The compact size makes it convenient for you to store and carry. Strong SealingThis Mason jar vacuum sealer is made of upgraded food grade silicone and ABS plastic materials. High performance double sealed silicone rings help the can vacuum sealing machine seal more easily and achieve better sealing effect, effectively preventing moisture from affecting food. Product ComponentsThis product includes wide mouth mason jar vacuum sealer *1, regular mouth converter *1 (for regular mouth mason jars), wide mouth lids *5, regular mouth lids *5, can opener *1, c-cable *1 and user manual *1.If you have any questions, please contact us, we will provide you with satisfactory service within 24 hours. Strong & QuietWe use a powerful and quiet motor that doesn't produce unpleasant sounds, allowing you to complete your vacuum sealing in a quiet and pleasant atmosphere. It is perfect for gifts for family, friends and canned food lovers. Easy to UseOne click operation frees your hands from manual vacuum mode. The equipped LED screen allows you to clearly see the working time and the current battery level of the machine, and can be operated according to the time you need. (After starting work, the vacuum will automatically stop after 60 seconds)