1、Output 12 laser lines for finer positioning, with self-leveling system, flexibility and stability. 2、Adopts optical , K9 material, fine transmission, with clear laser light. 3、Equipped with self-test calibration function, ≤3° automatic leveling, but if the angle is over 3°, the laser light will keep blinking reminding you to reset them on a flat ground. 4、Rotation knob design, clockwise rotate to open it, anticlockwiserotate to close it. 5、Two touching buttons design, one OUT/H button, one V button, horizontal line and vertical line with a clearly division. 6、The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. 7、360° rotatable base, and equipped with fine adjustment mechanism, can make the machine quickly find the target. 8、1/4\ screw size for easy connection, it can be used with tripod to adjust the working height of the machine. 9、Comes with wall-mounted bracket, can be easily attached to the floor tiles, wall stickers, and ceilings, all 7mm pitch. 10、Watreproof and dustproof, suitable for both indoor and outdoor use. 11、Easy to carry with the case, providing quick and convenient mobility and storage.