PLS3 3-Point Red Beam Laser Level PLS-60523 by Pacific Laser Systems Accurate to +/- 1/4 of an inch at +/- 100-Feet Includes the carrying pouch, floor stand, wall bracket, and a one year warranty Lay out reference points faster than traditional, labor intensive construction levels Self leveling range of 6 Degree Operating time of + 30 hours continuous Laser Class-II; Laser Type-635nm, &lt;1mW