Milwaukee introduces the first plumb beam laser to operate on a power tool battery, the M12 12V Lithium-Ion not included. Compatible with the M12 cordless system and delivers 75 more run time than the competition. The 2-beam plumb laser's self-leveling mechanism ensures an accurate auto plumb up to 1/4in. @ 100 feet. Does not include case. Laser Output 1mW, Accuracy 1/4 in. at 100 feet, Beam qty. 2, Visual or Audible Indicator Visual, Case Included No, Beam Type Line, Base Type Standard or magnetic, Battery Included No, Self Leveling Range 4, Battery Type 12V Lithium-Ion, Leveling Type Self, Mount Type Stand alone or magnetic, Laser Beam Color Red, Laser Wavelength 635nm.