Rotary Laser Level, Horizontal And Vertical, Manual Two Screw, Range w/Detector 800 Ft, Range w/o Detector 200 Ft, 2 Modes, Plumb Up, Power Source (4) C Alkaline Batteries, Accuracy 1/4 In @ 100 Ft, Rotating Speed 150, 300 RPM, Includes Batteries, Remote, Target, Wall Mount, Carrying Case, And Manual, Operating Temp 22 To 120 F Technical Specification Item Rotary Laser Level Type Horizontal And Vertical Leveling Type Manual Two Screw Range w/Detector 800 ft. Range w/o Detector 200 ft. Modes 2 Plumb Down No Plumb Up Yes Power Source (4) C Alkaline Batteries Accuracy 1/4 @ 100 Ft Grade/Slope No Number of Beams 2 Beam Color Red Laser Class II Wavelength 635nm Rotating Speed 150, 300 rpm Visual/Audible Indicators Yes Auto Shutoff No Features Compact Size, Built-In Trivit, One Button Operation Includes Batteries, Remote, Target, Wall Mount, Carrying Case, And Manual Operating Temp. 22 To 120 Degrees F Thread Size 5/8x11