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