Cylindrical lens technology - Solid glass optical system draws a continuous line at any distance, Line fan angle - 70 degrees, Line widths - 1/16", Push on/off switch - turn unit on and off without having to disconnect power, Beam on indicator - two indicators top & bottom for easy viewing, Hard anodized - scratch resistance housing, Laser diode - rated for 10,000 hours of operation or 5 years normal operating condition, Includes > Red or green laser, 110V AC adapter, mounting bracket, instruction manual