Accurate to +/- 1/8" @ 30' for increased accuracy. Horizontal & Vertical Beams for increased range in level & Plumb applications such as acoustical drop ceilings, framing, electrical, mechanical & other installations Built-in magnetic pivot bracket mounts easily on metal surfaces Universal wall mount for use on steel track or wood/drywall mounting, Over molded housing for jobsite durability Includes 3 (AA) Batteries for 20+ hours of runtime One-button operation and control panel for ease of use, Manufacturer: Dewalt