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