Johnson Level & Tool 40-6656 Self-Leveling Cross-Line Laser Green Beam Projects a self-leveling laser cross on your work surface to easily layout your jobsite Visual out of level indicator Green beam 400 percent brighter indoors Laser Class Illa, Power output 5mW 3 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for three years after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use.