"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. Battery Included Yes, Vertical Leveling No, Laser Beam Color Red, Visual or Audible Indicator Visual, Indicator Type LED, Material Type Co-molded rubber/plastic housing, IP Protection Class IP 67, Battery Type D, Rotation Speed 600 rpm, Horizontal Leveling Yes, Leveling Type Automatic electronic, Laser Output 10mW, Beam Rating 650nm, Self Leveling Range 5, Grade Capability Single manual grade, Accuracy 1/16 in. @ 100 ft., Exterior Range ft. 2,800, Single, Pair, or Set Set. Suitable for grading and excavating, concrete forms, machine control, site preparation, marking elevation, landscaping and driveway paving"