Adjustable Heating Temperature:8 Temperature heating levels can be adjusted by rotating the adjusting knob, max sealing thickness of 0.4 mm for ensuring sealer to seal bags of different thickness and material of a higher or lower melting point.No Heating Time Needed:No heating or cool down time needed, safe and simple to use. Impulse sealers are very convenient and safe because they can be immediately used, and the chance of being burned is minimal. An impulse sealer can save your business time and money. The impulse sealer will only apply heat whenever the arm is down and in contact with the material and base.Portable and Durable:Compact Size of bag heat sealer : 16 inch (400mm) sealing length, 3 mm sealing width, stability and good