feature: The operation is simple and fast. Featuring the latest technology, this portable food saver is very easy to use and requires no preheating. When the lid is pressed down, the high-efficiency and low-loss heating film will immediately reach the sealing temperature. Place the bag to be sealed in the center and slide it along the edge of either bag at a slow and steady speed to create an airtight seal. Not suitable for pure paper bags and pure aluminum bags. instruct: Insert 2 AA batteries (batteries not included) Lock safety/protective cover in down position Preheat the sealing machine for 5-7 seconds The bag surface that needs to be flattened is sealed along the edge Place the plastic seal on the bag and press firmly While holding it, move moderately from one end to the other Finally tighten the protective cap and replace >< Specifications: Material: High-quality ABS material, resistant to high and low temperatures . Non-toxic and durable Size: 15*4*4cm Color: pink/white/black Batteries: 1.5V, 2 AA batteries, only alkaline batteries (not included). br><>Start User Manual 1. The machine will not heat up by itself after installing a new battery. Hold for 3-5 seconds to allow the heat to gradually rise. 2. Please use new batteries. Do not mix up battery polarity. Make sure the battery is installed correctly. Otherwise, the machine cannot generate heat. 3. After the battery is installed correctly, press and hold the machine for 3-5 seconds. The machine will then start generating heat. 4. For thicker plastic bags, please move slowly between machines to allow the heat to spread evenly for better sealing performance. 5. No need to remove the battery. After use, simply move the hook between the machines to block contact between the two metal parts.