Bosch GPL5-RT 5 Point Self Leveling Alignment Laser (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear and includes all relevant accessories plus a 90-day warranty Integrated reference lines for precise positioning of tool and transfer of points Easy field recalibration maintains accuracy and prevents downtime Pocket-sized at only 4-1/8in (105mm) tall Easy access battery compartment Class IIa laser product, &lt;1mW power output