Plastic Type: PP.
Type: Fruit & Vegetable Tool.
Kitchen Supplies: Travel Food Storage Tool.
Easy ,convenient to use and storage, great ideal for home use. A magnet on the based can be adsorbed on the metal surface.
How to use:
Please open cover to preheat the item by pressing 5 seconds before using. You simply slids it along the edge of any bag and it's sealed airtight.
Please Insert 2 AA batteries (not included) and "+" "-"marks can see, make sure batteries face the right way.
Perfect to Keep the Freshness
Perfect reseal unused portions of food, snack, seasoning, ingredients in plastic bags.
As it puts in the description. It works with two batteries of the normal size. There's no proof. I'll count.