Temperature Adjustable: soldering iron has 3 temperature choices, the indicator light is green, the temperature is about 620℉-660℉; The indicator light is blue, the temperature range is about 700℉-750℉; The red indicator light is the highest temperature, about 800℉-840℉ Easy to Operate: Soldering iron kit just long for 5 seconds to turn on/off, short to enter temperature selection. There is a layer of heat insulation on the to prevent the iron from burning your hands during operation, and the TPE handle is comfortable and non-slip Replaceable Soldering Heads: Soldering iron is equipped with 3 kinds of soldering iron heads: conical head, flat round head, horseshoe head, to meet your different working needs, the heating time is about 10 seconds, which improves the working efficiency. Cordless Soldering Iron: Soldering kit built-in battery, the wire, the control is more free and convenient. Equipped with TYPE-C charging connector, it can be used continuously for about 30 minutes after a