"The Rotary Laser Level features self-leveling in the horizontal plane and manual-leveling in the vertical plane with 90 split beam. Range scan modes include dot and two adjustable line lengths. Visual and audible alarms when beyond leveling range. Rotation Speed 150, 200, 250, 300 rpm variable, Case Type Hard shell case, Accuracy 1/8 in. per 100 ft., Dimensions L x W x H in. 7 1/16 x 6 3/8 x 7 61/64, Material Type Rugged housing, Vertical Leveling Yes, Scanning Modes qty. 3 0, 30, 60, Visual or Audible Indicator Both, Class Rating Class IIIa, IP Protection Class IP 66, Laser Beam Color Red, Beam Type 90 split beam, Working Temperature 32F to 104F, Tripod Mount Dimensions in. 5/8 in.-11 center screw thread, Battery Included Rechargeable battery pack and 6V adapter, Self Leveling Range 3.5, Battery Life Approx. 15 hrs. of continuous use, Interior Range ft. Up to 200, Exterior Range ft. Up to 2,000, Single, Pair, or Set Set, Laser Output 5mW, Horizontal Leveling Yes, Battery Type Rechargeable battery pack, 6V adapter or C batteries, Leveling Type Self pendulum, Laser Wavelength 635nm10nm. Locking mechanism protects inner pendulum during transit"