2 in 1 heat sealing device and cutter: high-quality ABS material, this bag sealing device can not only be used to seal plastic bags, chip bags, rice bags, the built-in cutter can also be used to open the bag. Safe DesignThe plastic bag locking machine is equipped with a twist lock design, and the button can be locked when turned 90 to the left. The small opening design can safely and effectively prevent accidental squeezing, burns and touch by children. Three sealing modes adjustable sealing modes: heat sealing device has 3 sealing modes to choose from (mode for thick bags, ordinary bags and super thin bags). It is a great help for you to store your leftover snacks, food, fruit and so on. USB charging and large capacity battery: this rechargeable USB vacuum welder works with a high capacity rechargeable battery (1300 mAh), which can be used in the second mode for about half a year after full charging.