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, Battery Type D, Beam Rating 635nm, Beam Type Dual, Horizontal Leveling Yes, Indicator Type LCD screen, Interior Range ft. 660, IP Protection Class IP 67, Exterior Range ft. 2,800, Grade Capability Dual dial in, Leveling Type Automatic electronic, Material Type Co-molded rubber/plastic housing, Rotation Speed 0-1,000, Scanning Modes qty. 3 Chalkline mode, point-to-pt. chalkline, spot mode, Laser Beam Color Red, Laser Output 10mW, Tripod Mount Dimensions in. 5/8-11, Vertical Leveling Yes, Visual or Audible Indicator Visual, Self Leveling Range 5º, Single, Pair, or Set Set, Accuracy 1/19 in. @ 100 ft. 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. Model Number: 57-ALGRPKG. UPC: 644425577480.