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