The CST/Berger self-leveling horizontal rotary laser level features Pro-Grade technology in a rugged, co-molded rubber and plastic housing that makes it suitable for the most demanding projects. U.S.A. IP Protection Class IP 67, Battery Type D, Indicator Type LED, Self Leveling Range 5º, Laser Beam Color Red, Material Type Co-molded rubber/plastic housing, Accuracy 1/16 in. at 100 ft., Single, Pair, or Set Set, Visual or Audible Indicator Visual, Laser Output 10mW, Horizontal Leveling Yes, Beam Rating 650nm, Grade Capability Single manual grade, Battery Included Yes, Leveling Type Automatic electronic, Exterior Range ft. 2,800, Rotation Speed 600 rpm, Vertical Leveling No. Suitable for grading and excavating, concrete forms, machine control, site preparation, marking elevation, landscaping and driveway paving