"The Self-Leveling Rotary Laser Level features automatic-leveling, plus slope function to allow user to perform slope at different inclination in both x and y axis. Included detector and remote control for convenient operation. Grade Capability 8, Laser Output 5mW, Vertical Leveling No, Self Leveling Range 5, IP Protection Class IP 66, Rotation Speed 700 rpm Fixed, Battery Life Approx. 28 hrs. of continuous use, Visual or Audible Indicator Both, Class Rating Class IIIa, Interior Range ft. Up to 200, Working Temperature 14F-113F, Single, Pair, or Set Set, Battery Type C, Tripod Mount Dimensions in. 5/8 in.-11 center screw thread, Accuracy 1/16 in. @ 100 ft., Laser Beam Color Red, Dimensions L x W x H in. 7 3/8 x 5 7/8 x 8 5/32, Laser Wavelength 635nm10nm, Horizontal Leveling Yes, Case Type Hard shell case, Exterior Range ft. Up to 2,000, Battery Included Yes 4, Leveling Type Automatic electronic. Height of Instrument alarm function ensures product accuracy"