Cordless soldering iron , portable pocket size , lightweight and You can take it with you to any scene you need Guide tanks into the air inlet and inflate it by pressing down About 10 seconds , filling can be completed Wait for few minutes until stabilizes before use.If there is a hissing sound from the tail after , press the pen tip slightly into the air outlet to it.Replace with a soldering iron tipLighting the : Push the button to the ON-position and hear a " hiss " sound ; Push the electronic button to start the fire.Burn for 3minutes After the is extinguished , the soldering iron head will continue to heat.Adjust the size of Filling : Fill with and confirm that the button is turned off before supplementing Easy to maintain and Refillable It uses widely available 8ml capacity, Manufacturer: Watreketal