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