"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., Battery Type AA, Interior Range ft. Up to 200, Laser Beam Color Red, Rotation Speed 200, 400, 600 rpm Variable, 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, Battery Included Yes 4, Battery Life 20 hrs. of continuous use, Working Temperature 14F-113F, Beam Type Vertical laser plane w/90 split beam, Horizontal Leveling Yes, Single, Pair, or Set Set, Laser Wavelength 635nm10nm, Exterior Range ft. Up to 800, Indicator Type Visual, audible, Vertical Leveling Yes, Leveling Type Self pendulum."