Portasol SuperPro 125 Gas Soldering Iron Kit - SP1-KThe Portasol Super Pro 125 features adjustable tip temperature up to 580C, with equivalent electrical power of between 25 and 125W! Ignition is achieved with the internal Piezo crystal mechanism, and run time is around 2 hours on a 30 second refill. Uses Butane gas. The stainless steel finished gas tank features a viewing window to keep an eye on fuel level, and the protective end cap also acts as a safety cut off for the gas valve control when