"Self-Leveling Rotary Laser Level can be used for installing cabinets and drop ceilings, and for accurately framing walls and concrete projects. A locking mechanism protects inner pendulum during transport. Visual and audible alarms when laser drifts beyond leveling range. Dimensions L x W x H in. 4 31/32 x 6 11/16 x 6 11/16, Accuracy 1/8 in. per 50 ft., Interior Range ft. Up to 200, Laser Beam Color Red, Rotation Speed 200, 400, 600 rpm Variable, Battery Type AA, Tripod Mount Dimensions in. 5/8-11 center screw thread, Class Rating Class IIIa, Visual or Audible Indicator Visible, audible, Self Leveling Range 3, Laser Output 5mW, Case Type Soft sided case, IP Protection Class 54, Exterior Range ft. Up to 800, Horizontal Leveling Yes, Laser Wavelength 635nm10nm, Single, Pair, or Set Set, Indicator Type Visual, audible, Battery Included Yes 4, Battery Life 20 hrs. of continuous use, Working Temperature 14F-113F, Beam Type Vertical laser plane w/90 split beam, Vertical Leveling Yes, Leveling Type Self pendulum."