***One 360° red beam laser lines. One vertical laser line.
***Li-ion battery works with super long operating time as 19 hours
***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
***Connect with tripod through1/4″ screw thread if necessary
***Super useful tool for home remodeling like floor laying, tile laying, ceiling, picture hanging, staircase, doors and windows, painting, furniture installing, etc.