DOUBLE LASER MODULE: The Laser Level has Dual Laser Module that satisfies your different needs, you can toggle between vertical & horizontal lines, in addition, it has higher brightness and lower energy consumption. Laser Class: Class 2 SELF-LEVELING WITHIN WITHIN 4 °: Unlock the pendulum, inclination angle ≤4 °, the laser is automatically leveled. Otherwise, the laser flashes to indicate the out-of-level condition. Lock the pendulum to switch to manual mode, you can adjust the lines without self-leveling in the desired orientation FLEXIBLE MAGNETIC SUPPORT: The Laser Level can be affixed to most metal surfaces with the magnetic retainer (included) or mounted on a 1/4 " - 20 tripod (not included) .The line laser can be rotated 360 degrees and one Project red laser cross line at any position or angle 20H BATTERY LIFE AND WIDE APPLICATIONS: Over 20 hours battery life with continuous use. Suitable for wide uses: such as paving tiles, installing carpentry for doors, windows or furniture, hanging wallpaper, etc. But not suitable for outdoor use WHAT YOU GET 1 x HYCHIKA Line Laser, 1 x Magnetic L Mount, 2 x AA Batteries, 1 x User Manual