Portable Mini Plastic Bag Sealer Machine Features: Simple and fast operation. With the latest technology, this handheld food saver is very easy to use and does not require preheating. When the cover is pressed, the high-efficiency and low-loss heating film will immediately reach the sealing temperature. Place the bag to be sealed in the middle, and then slide it along the edge of any bag at a slow and constant speed to achieve an air-tight seal. Not suitable for pure paper bags and pure aluminum bags. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.