POWER FLEXIBILITY: Works with included core 18V 4 Ah battery or 4X C Cell alkaline batteries (sold separately) for less downtime on the job JOBSITE TOUGH CONSTRUCTION: IP65 rated (tool only) for dust-tight and water-resistant durability in tough jobsite conditions BLUETOOTH CONNECTIVITY: Allows set-up of the laser from across the room using paired smartphone and the Bosch Leveling Remote App BUILT-IN VISIMAX TECHNOLOGY: Monitors power consumption to maximize line visibility and extend battery life INTEGRATED MAGNETIC LASER MOUNT: Positions and mounts with magnets or threaded mounts with fine adjustment pivot for fast and precise alignment BRIGHT GREEN-BEAM LASER: Projects up to 4X brighter than standard red beams POWER-SAVING MODE: Helps to increase efficiency and extend battery life by adjusting brightness of the laser ALL-IN-ONE FUNCTIONALITY: Three chalk lines in 360º laser planes – one horizontal and two vertical, make the tool a complete level as well as an alignment laser with simplified and speedy job setup BRIGHT, THIN LINES: With 115 Ft. range that level within 1/8 In. accuracy at 30 Ft. distance SMART PENDULUM SYSTEM: Self-levels, indicates out-of-level condition and locks when switched off for secure transport