Green Beam is 400% more visible than red beam, Self-leveling in the horizontal plane, Locking mechanism protects inner pendulum during transportation, Manual-leveling in the vertical plane with 90 degrees split beam, Laser beam modes include dot and two adjustable line lengths, Visual and audible alarms when beyond leveling range, 40-6543 Kit Includes > Laser, remote control with 9V battery, wall/ceiling mount, NiMH rechargeable battery pack, 4 "C" alkaline battery compartment (batteries not included), 6.4V battery adapter, tinted glasses, magnetic target, instruction manual with warranty card, hard-shell carrying case