"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, Self Leveling Range 5, Single, Pair, or Set Set, Battery Type C, IP Protection Class IP 66, Rotation Speed 700 rpm Fixed, Battery Life Approx. 28 hrs. of continuous use, Visual or Audible Indicator Both, Laser Output 5mW, Vertical Leveling No, Tripod Mount Dimensions in. 5/8 in.-11 center screw thread, Accuracy 1/16 in. @ 100 ft., Case Type Hard shell case, Horizontal Leveling Yes, Exterior Range ft. Up to 2,000, 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, Battery Included Yes 4, Leveling Type Automatic electronic. Height of Instrument alarm function ensures product accuracy"