Auto-leveling AlarmIt has self-leveling function, self-leveling ≤3°, but if the angle exceeds 3°, the laser light will flash continuously and beep to remind you to reset on a flat ground. 4D 360° 16 Lines LaserTwo 360° horizontal lines and two 360° vertical lines ensure complete and flat coverage of floors, walls and ceilings around the room. 4D 16 lines laser line for precise positioning, the 4D laser level provides omnidirectional horizontal coverage, horizontal/vertical accuracy: ±0.2mm/10m, working distance: 10-30 meters. Visible Mode & Remote ControlThis laser level uses green laser beam, brighter than standard red beam. The bright green laser beam can be seen up to 30 meters. Equipped with a remote control, more convenient and quick to use. Magnetic Bracket & Durable DesignThe powerful magnetic bracket allows you to quickly position the laser tool on metal surfaces to work on walls. The shell adopts IP54 design, which is waterproof and dustproof, and is suitable for harsh working environments. The kit comes with a sturdy carrying case suitable for harsh working environments. Transportation and storage are more convenient. Shipping accessories list4D green laser level*1, 3000mah battery*2, charger*1, lifting platform*1, triangle base*1, wall bracket + fixed plate*1, remote control*1, green target*1, goggles*1. If you have any questions, please feel free to contact me.