The Milwaukee M12 SI Cordless Soldering Iron has a quick heat up time, ready to use in under 30 seconds. With 3 locking head positions: 0, 45 and 90. For work in multiple orientations. Temperature monitoring to maintain heat throughout the toughest of applications. Dual colour LED lights notify the user to the following: 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. Red light remains on until the tip is cool. The tips can be easily replaced, with no additional tools required. Flexible battery system: works with all Milwaukee M12 batteries. M12 SI-201C: 1 x 12V 2.0Ah Li-ion Battery M12 SI-0: Bare Unit - No Battery or Charger supplied. Specification: Heater Power: 90W. Temperature: 400C (750F). Weight: 500g. The Milwaukee M12 SI-0 Soldering Iron is supplied as a Bare Unit - No Battery or Charger supplied. Heater Power: 90W Temperature: 400C (750F) Weight: 500g