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