Self-Leveling 3 Beam Laser Dot simultaneously projects 3 self-leveling beams. Magnetic base holds tight to steel framing track. Dust and water resistant. Interior Range (ft.): Up to 100, Leveling Type: Self-leveling (pendulum), Laser Output: <=5mW, Battery Life: Approx. 50 hrs., IP Protection Class: IP 54, Tripod Mount Dimensions (in.): 1/4in.-20 Center screw thread, Dimensions L x W x H (in.): 4 3/16 x 2 9/16 x 4 1/2, Mount Type: Tripod or magnetic, Self Leveling Range: ±3deg , Base Type: Magnetic base, Laser Wavelength: 635nm±10nm, Working Temperature: 14deg F to 130deg F, Battery Included: Yes, Class Rating: Class IIIa, Beam (qty.): 3, Accuracy: ±1/8in./50 ft. (±2mm/10m), Laser Beam Color: Red, Beam Type: Dot, Visual or Audible Indicator: Both, Battery Type: AA