The M12SI-201C Milwaukee Soldering Iron powered through 1 x 12v x 2Ah REDLITHIUM Battery comes with 3 locking head positions to work in multiple orientations 0 degrees, 45 degrees and 90 degrees and quick heat up time as the tool is ready to use in 20 to 30 seconds. The M12SI-201C Milwaukee Soldering Iron uses dual colour LED lights notify the user flashing green when tool is heating up, solid green when the tool is ready for operation and solid red when the tool is off but the tip is hot to touch until the red LED turns off. Other features include tool free replaceable tips, temperature monitoring to maintain heat throughout tough applications and the brightest LED light for increased visibility of soldering application