usb soldering iron

2.If leaving the item unused for 25 seconds,the LED light will be turned off and the pen will get into sleeping mode automatically.
Caution:
1.Handle the heated soldering iron with extreme care, as the high temperature of the iron can cause fires or painful burns.
2.The first time you use the soldering iron,it may smoke slightly as the heating element dries out.This is normal and should only last for approx 10 minutes.
3.Never file the specially-plated tip.