The Bosch GPL100-50G features a five-point, self-leveling laser with +/-1/8 in accuracy at 30 ft for up or down plumb, align and level applications (the bottom point's accuracy is +/-1/4 in at 30 ft). This unit features green-beam technology, which is up to 4X brighter than standard red beams. It also has the Bosch exclusive VisiMax™ technology, which delivers maximum beam brightness in most jobsite conditions. The unit includes point projection to the front, so it can be used in a variety of positions for flexibility on the job. It is faster than a standard manual plumb bob. The unit includes several durability features, such as the smart pendulum system to lock the laser when switched off, 360 deg rotation, a hard carrying case and full rubber overmold housing. The integrated multi-purpose laser mount features strong magnets and allows the user to mount the laser virtually anywhere.