"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, Class Rating Class IIIa, Interior Range ft. Up to 200, Working Temperature 14F-113F, Battery Life Approx. 28 hrs. of continuous use, Visual or Audible Indicator Both, Single, Pair, or Set Set, Battery Type C, IP Protection Class IP 66, Tripod Mount Dimensions in. 5/8 in.-11 center screw thread, Case Type Hard shell case, Laser Output 5mW, Vertical Leveling No, Accuracy 1/16 in. at 100 ft., Dimensions L x W x H in. 7 3/8 x 5 7/8 x 8 5/32, Laser Wavelength 635nm10nm, Rotation Speed 700 RPM fixed, Self Leveling Range 5, Horizontal Leveling Yes, Battery Included Yes 4, Leveling Type Automatic electronic, Exterior Range ft. Up to 2,000, Laser Beam Color Red. Height of Instrument alarm function ensures product accuracy"