The self-levelling cross-line laser from Bosch® projects visible green lines up to 4x brighter than standard red beams. It has a working range of up to 40' and offers reliable accuracy of ±5/16" at 30'. This tool monitors tool temperature and power consumption to deliver the brightest line for the job. It is equipped with a smart pendulum system for self-levelling and indication of out-of-level condition, as well as pendulum lock for safe tool transport. The included flexible mounting device clamps to multiple surfaces and provides a rotating 360° neck for quick setup and simple fine-tuning. The laser is backed by a 2-year limited warranty and comes with the mounting device, one (1) pouch and two (2) AA batteries.