FoodSaver sealer with vacuum sealing function, suitable for food preservation using dedicated bags. - Brand: FoodSaver - Model: Sealer - Function: Vacuum sealing - Accessories: Compatible with dedicated bags This item was received as a gift. There are no instructions or box. Only the three items shown in the photos. Operation has been confirmed. Here's a rough guide on how to use it (from photo 3 onwards) ↓ Open the lid and align the edge of the bag with the sealing strip, then close the lid. Press the lock parts on both sides to lock. Press the on button, and the green light will come on in 5-10 seconds. When the flashing light goes off, release your finger and open the lid (the lock is released), and the edge of the bag will be sealed. When sealing the bag, insert the edge of the bag into the groove labeled "vacuum channel" and repeat the same process to remove the air, creating a vacuum and sealing the bag.