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