"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. Self Leveling Range 5, Case Type Hard shell case, Battery Included Yes 4, Leveling Type Automatic electronic, Rotation Speed 700 rpm Fixed, IP Protection Class IP 66, Exterior Range ft. Up to 2,000, Grade Capability 8, Horizontal Leveling Yes, Laser Beam Color Red, Battery Life Approx. 28 hrs. of continuous use, Visual or Audible Indicator Both, Laser Output 5mW, Vertical Leveling No, Dimensions L x W x H in. 7 3/8 x 5 7/8 x 8 5/32, Laser Wavelength 635nm10nm, 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. Height of Instrument alarm function ensures product accuracy"