Bag sealer can not only seal the bag but also has a cutting function or safety lock design. you can use it to open the bag or make the sealing neater. This bag sealer can help you open the chip bag, snack bag, to seal your uneaten snacks to keep fresh.USB RECHARGEABLE HEAT SEALER The chip bag sealer has a built-in rechargeable battery with a capacity and is equipped with a Type-C USB interface.EASY TO USE The food sealer has two function: seal and cutUNIQUE SAFETY LOCK DESIGN This portable bag sealer has a unique safety lock design when you use it. when you finish using, turn the safety switch to the "left or right" middle position.PORTABLE & EASY This bag resealer for chip bags is small and portable. there has magnetic on the back, you can stick it to the refrigerator or other place which has metal for saving space. Suitable for both kitchen and outdoor camping, this product is easy to use than other portable sealers.