***Two laser lines，one horizontal and one vertiacl, and one plumb down laser dot.
***Compatible for both indoor and outdoor applications, switchable between continuous laser and pulse laser
***Lock position to apply for tilt purpose, like staircase laying, unit projecting sloped laser lines.  
***Self-leveling, laser flashing and sound indicating when beyond the range
***The base could rotate by 360° freely
***Super useful tool for home remodeling like floor laying, tile laying, ceiling, picture hanging, staircase, doors and windows, painting, furniture installing, etc.