POWER FLEXIBILITY: Works with 4x c cell alkaline batteries or a core18v 2.0 ah or 4.0 ah battery (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 360 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