Slightly pressing the metal point on the body of the soldering pen, then the LED light will be lightened up and job can be started.If stop working, please press the metal point on the body of the soldering iron, them the LED light will be turned off.  Features:Fully functioning USB powered soldering iron. Small and compact for portability. Rapid heat up and instant recovery. Heating up in less than 15 seconds. Cooling down in less than 30 seconds. Long life tip with a protective cap.  Specification:: 5V 8WLED Indicator: Yes Item size: 16.5 * 2 * 2cm / 6.5 * 0.79 * 0.79in(L * W * H)Item weight: Approx. 25g / 0.88ozPackage size: 18.7 * 6.8 * 2 m / 7.36 * 2.68 * 0.79in(L * W * H)Package weight: 86g / 3.03oz Package list:1 x Soldering Iron1 x USB Cable1 X Wire1 x Metal Stand1 X Cover a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a