Johnson's ultra-bright green beam laser projects three self-leveling 360 planes of laser light for total jobsite coverage up to 200. This laser offers 3 green beams one horizontal &two vertical for one-person alignment, leveling &layout using one tool. Robust construction withstands tough jobsite conditions &provides resistance to dust &water. Pulse mode for use with separate detector in bright light or outdoor conditions where beams are not visible. Includes: Laser with magnetic base, magnetic target, li-ion battery &charger, alkaline battery compartment (alkaline batteries not included), hard-shell carrying case.