3 Beam Line Laser to aid in 90° layout. 2x Brighter diode to increase visibility in bright job site conditions. Built-in magnetic pivot bracket mounts easily on metal surfaces. Accurate to +/- 1/8" @ 30' for level applications. 1-button operation and control panel for ease of use. Micro adjust knob for precise alignment of 90° intersecting lines over greater distances. This DEWALT High Performance Industrial Tool comes with a warranty package that includes: 90 Day Money Back Guarantee, 1 Year Free Service Contract & 3 Year Limited Warranty.