[Auto-niveau alarm: 10 meters remote control, ±3.° auto-leveling system. When the automatic leveling range is exceeded, the laser level continues to blink and beep. In this case, you need to level it manually. You can check the horizontal bubbles to see this. 360° The smooth manual rotating base makes it easy to adjust the position of the laser line.] [4D 360° Laser 16 lines: Two 360° horizontal and two 360° vertical lines ensure complete and flat coverage of floors, walls, and ceilings around the room. Precise positioning of the 4D laser line with 16 lines, adjustable 4 / 8 / 12 / 16 lines, the 4D laser level provides omnidirectional leveling coverage with an accuracy of ± 1 / 10 inch, 32 feet, the maximum working range indoors is 30 feet.] [Electricity savings: The high-brightness green beams are visible in sunlight and are brighter than standard red beams. Use a rechargeable 4000mah battery (including a charger) that can last up to nearly 8 hours. The rechargeable lithium battery can operate for more than 5 hours with all beams on. The rechargeable battery is more economical and environmentally friendly than AA batteries.] [Wide range of applications and easy installation: The horizontal/vertical lines can be selected individually or simultaneously, depending on the application on the job site. Suitable for auxiliary tile fixing, wall decoration, floor tile fixing, stair railing, etc. with a strong wall mount, 1 / 4 and 5 / 8 mounting threads to meet different mounting methods. Equipped with a 360° lifting platform base.]