1) 927 soldering iron is designed justable temperature and constant temperature function, on or off switch, LCD display, switching between Celsius (180-480) and Fahrenheit (356-896), moreover, it can set sleep time Preference and adjust temperature manually. 2) The welding torch has 4 built-in heating wires, adopts PID (proportional-integral-derivative) technology for temperature control and regulation, and the temperature sensor will provide accurate temperature and heat output in time. 3) The tip of the soldering iron adopts a 90w internal heating ceramic core, which will heat up to the working temperature within 20 seconds. The heat-resistant screw head can effectively isolate the temperature, resulting in a longer cool handle. 4) The advanced professional soldering iron has 5 multi-head replacements, the thread is heat-resistant and impact-resistant design, and the soldering iron tip is not easy to fall off. 5) The soldering iron kit comes with LCD display soldering iron, 5PCS different soldering iron tips, tin wire tube, soldering iron stand. Soldering practice kit can be used for pyrography, lettering. Model: HANDSKIT-927(90W)Sleep mode: Automatic sleep after 15 minutesVoltage: AC(110V or 220V)Temperature range:180-480CTemperature stability:and2CTemperature offset range: and99CTemperature Unit:C or Heater: Four-core PTC ceramic heaterDisplay:Blue LEDN.W.:140g