3 laser beams: 1 horizontal, 2 vertical with a 90 degrees intersection
Manual mode for angular layout/tilted marking
When laser is out of level, visual and audio signals will be given off to alert users 
Strong folding legs for angle mounting - extremely convenient 
Shock resistant rubber casing for added durability and long-lasting use
Runs on 3x AA batteries 
Suited for use in acoustic ceiling and drywall installations, aligning and framing doors and windows, leveling of electrical outlets, plumbing and studs, etc.