"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. Battery Included Yes 4, Battery Life Approx. 28 hrs. of continuous use, Battery Type C, Dimensions L x W x H in. 7 3/8 x 5 7/8 x 8 5/32, Exterior Range ft. Up to 2,000, Grade Capability 8, Horizontal Leveling Yes, Case Type Hard shell case, Class Rating Class IIIa, Laser Beam Color Red, Laser Output 5mW, Laser Wavelength 635nm10nm, Leveling Type Automatic electronic, Interior Range ft. Up to 200, IP Protection Class IP 66, Single, Pair, or Set Set, Vertical Leveling No, Visual or Audible Indicator Both, Rotation Speed 700 rpm Fixed, Self Leveling Range 5, Working Temperature 14F-113F, 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"