Feature●Safety level: Class II, <1mW power output.●4 X 360° Green Level Laser with Top and Bottom Lines: This level laser tool features 4 X 360° laser planes, including top and bottom lines. The top line is suitable for suspended ceiling installations and the bottom line is suitable for tile installations. With the lift base, the terrestrial laser can navigate uneven surfaces or obstacles between 1" and 3.54" in height. Also, two 360° vertical lines intersect at a 90° angle to help users with square layouts.●Auto Leveling & Auto Alarm: ±3° inner tilt and auto leveling. If it exceeds ±3°, the laser will keep flashing and alarm. Power on and press the top "Toggle Logo" button for 3 seconds to activate the slash function. The laser beam will be locked and you can use it at any angle. Additionally, green horizontal bubbles can check the fluid level of the machine.●Smart Chip: Built-in brand new smart chip, the laser level can be intelligently operated by remote control. Fast response, high efficiency, saving time and effort. The laser level uses high-precision and stable high-intensity green laser to make the transmitter of the laser line more accurate, brighter and go farther. The laser level provides up to 100 feet of indoor visibility (±1/16 inch, 23 feet), it can be used indoors or outdoors.●Wide Application: The 16 lines laser level has the advantages of waterproof, dustproof, drop-proof and wear-resistant. The powerful magnetic mount can be quickly positioned to metal surfaces to hang laser tools for wall applications. The 16-line laser level can help determine the levelness of walls, floors, tiles, etc. It can also be used to mount cabinets, bookshelves, curtain rails and more, keeping them flat and level.●Advanced configuration: The laser level has 2*4800mAh large-capacity lithium batteries, and one battery can last up to six hours. 16 Line Laser Tool Set Package Contents: 1 Green Laser Level, 1 Tool Case, 1 Lifting Platform, 1 Wall Mount, 2 Rechargeable Batteries, 1 Swivel Base, 1 Remote Control, 1 Charger , 1 Wall Clamp, 1 Instruction Manual.Description 16 Lines Laser Level 4x360 Self Leveling, 4D Green Cross Line Laser with 2 Digital Display Batteries