Soldering Station939D+ Lead-Free 60W, 3-Digit LED Display - Featuring Celsius / Fahrenheit Temperature, Digital Calibration, Hibernation Sleeping, SMD, Extra Plug-in Iron Heating Element, 6 Iron Tips --- Digital calibration and compensation: just needs to press the button combinations (easy to set, follow instruction manual with drawings) to compensate in one step. --- Plug-in heating element: In most irons, to replace iron heating element, operator uses a 2nd iron to de-solder/remove old heating element and then solder new element. In this soldering iron, the heating element has connection pins at the back. Operator only need to unplug the old heating element and plug new element with hands, no 2nd iron needed. --- Celsius or Fahrenheit switch: by press the white button combinations (easy to set, follow instruction manual with detailed drawings), the LED display will show 'C' or 'F' first and then show temperature data corresponding to Celsius or Fahrenheit degree. Operator can easily pick Celsius or Fahrenheit based on preference. --- Package includes: Iron station, 60w. Solid Iron holder with sponge and metal wool. 6x Iron tips (1x 900M-T-I, 2x 900M-T-K, 1x 900M-T-B, 1x 900M-T-2.4D, 1x 900M-T-3C). Useful Accessories: 1 extra heating element and 1 extra fuse.