The CST/Berger self-leveling horizontal/vertical digital dual grade rotary laser is a durable unit that holds up in the most challenging environments, providing super-fast electronic self-leveling, with anti-drift capability that ensures accurate results every time. U.S.A. Battery Included Yes, Horizontal Leveling Yes, Laser Beam Color Red, Battery Type D, Beam Type Dual, Rotation Speed 0-1,000, Grade Capability Dual dial in, Beam Rating 635nm, IP Protection Class IP 67, Self Leveling Range 5º, Material Type Co-molded rubber/plastic housing, Exterior Range ft. 2,800, Visual or Audible Indicator Visual, Accuracy 1/19 in. @ 100 ft., Single, Pair, or Set Set, Tripod Mount Dimensions in. 5/8-11, Leveling Type Automatic electronic, Indicator Type LCD screen, Laser Output 10mW, Scanning Modes qty. 3 Chalkline mode, point-to-pt. chalkline, spot mode, Interior Range ft. 660, Vertical Leveling Yes. Durable unit holds up in the most challenging environments Provides super-fast electronic self-leveling, with anti-drift capability that ensures accurate results every time Horizontal and vertical capabilities, along with dual electronic dial in grade, make unit ideal for exterior use