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