Features: 1. Irradiate 4D 16 lines, 360° no dead angle 2. Generally suitable for indoor and outdoor use, green light has high brightness, clear indoor and outdoor light, long projection distance, high laser height and clear lines. 3. Accurate measurement, more convenient to use. 4. 4/8/12/16 lines are adjustable, suitable for different occasions and meet different engineering needs. 5. Anti-collision and anti-vibration, 4D soft rubber cover, anti-collision and anti-vibration. 6. International standard IP54 waterproof and dustproof, multiple protection, longer service life in harsh environment. 7. 4000mAh large capacity battery, longer life, 4000MAH large capacity lithium battery, more than 72 hours of standby time, sustainable working time of 12-16 hours, and can work for 2 days after charging. 8. Using a tripod, 180° cutting operations can be performed . 9. ±3° automatic self-leveling function. An audible warning will sound when the automatic leveling range is exceeded. 10. LED Power