This mini bag sealer is a goodbye to the traditional battery, using USB charging mode, built-in lithium battery, green and more environmentally friendly. Simply press and hold for about 3-5 seconds to start heating, place the bag to be sealed in the middle, then slide along the edge of the bag at a slow and constant speed to seal (the sliding speed can be adjusted according to the thickness of the bag). Suitable for most plastic bag materials (paper is not applicable), such as aluminum foil heat seal bags, plastic snack bags, vacuum food storage bags, food packaging bags, PVC bags, can make chips, snacks and food to keep fresh, crispy, reduce food waste. 4 7/20"L x 1 7/20"W x 1"THICK