The Bosch GCL100-40G Green Beam Self-Leveling Cross-Line Laser with Plumb Points uses green-beam technology, which emits green lines and points up to 4X brighter than standard red beams. This gives the laser a working range for the lines of up to 165 Ft. The laser produces vertical, horizontal, cross-line modes, as well as upward and downward green plumb points. The tool can project two lines independently or together, for a broad array of alignment and leveling applications. It includes Bosch-exclusive VisiMax technology, which monitors tool temperature and power consumption to deliver the brightest line for the job. The tool has full rubber overmold housing, designed to be similar to a roll cage, so every major impact point is reinforced with rubber. The onboard user interface allows easy selection among the layout modes. The Bosch Smart Pendulum System self-levels and indicates out-of-level condition, and it locks the pendulum for secure transport. The included RM10 Rotating Mount offers quick setup, extra-strong magnets, and fine adjustment rotating nob. Easy-to-use line laser — facilitates quick job setup with a range up to 165 Ft. With vertical, horizontal and cross-line modes. Plumb points — projects upward and downward green laser points for transferring applications with a range of up to 50 Ft. Built-in VisiMax technology — monitors power consumption to maximize line visibility and extend battery life. Bright green-beam laser — up to 4X brighter than standard red beams. Full rubber overmold housing — helps protect every major impact point, with a design similar to a roll cage. Easy-to-use laser setup modes — controls vertical, horizontal, cross lines, and plumb points. Versatile job layout — lines can be projected separately or together for a variety of level and alignment applications. Pulse receiver mode — use an optional laser receiver for applications with a 165 Ft. Smart Pendulum System — allows tool to self-level, and it indicates out-of-level condition. Secure laser transport — after switching off, pendulum is locked. Onboard user interface — easily select among the layout modes. RM10 Rotating Mount — provides fast setup, extra-strong magnets, and fine adjustment rotation nob. Jobsite tough construction — withstands rainy or dusty jobsite conditions, and is IP64 rated. Battery gauge — features a three-LED indicator for battery management. (1) GCL100-40G Green-Beam Self-Leveling Cross-Line Laser with Plumb Points (1) RM10 Rotating Mount (4) AA Batteries (1) Hard Carry Case.