Features: The cordless and portable design makes it easier to use and will not be tied up by the rope. The heads of the electric soldering iron is detachable, which can be replaced in time and has a longer service time. With 40W, 80W and 100W for you to adjust, you can adjust the power according to your different needs. Built-in lithium battery, so you can recharging it in time and will not affect your normal use. Wide ranges of uses: suitable for disassembly and welding of electronic components, DIY handicraft production, small welding circuit boards, and so on.