New micro-thermal technology makes resealing plastic bags a snap. Keep food fresher longer with this innovative sealing device. Air Lock creates an airtight seal that prevents food from going stale without the clips, clamps, and rubber bands. The locking feature means the heating element is safely hidden away. Best of all, Air Lock is rechargeable, so no AAA batteries. Perfect for chips, crackers, inner cereal bags, baking goods, and any other bag you want to keep fresh.