1Rapid Heating and Cooling: Aluminum alloy soldering iron, heating less than 15 seconds, cooling less than 35 seconds, rapid heating and cooling, high work efficiency. 2Temperature Adjustable: The temperature and voltage knob of the welding tool can be adjusted in both directions, and the temperature of the soldering iron can be adjusted, and the adjustable range is 3V8V. 3Rechargeable: This wireless welding pen is rechargeable and can be powered by computer, power bank or mobile phone charger, etc. 4510 Interface: Soldering iron interface, can be connected to soldering iron and load, can be used in small gauges, accessories, precise electronic components, etc. 5Practical: The electronic welding kit is simple and convenient to operate, cordless design, small and light, suitable for home use and take away.