Laser Level is an upgraded version of the 360° automatic leveling level, which can be applied to daily home construction work, such as wallpaper, tile, hanging pictures, hanging photos, etc. The laser level has 3 operating modes: manual mode, automatic leveling mode and pulse mode. Manual mode: The laser line is fixed, no matter how the user positions the laser level device, the laser line is fixed. Automatic mode: The laser level with tripod needs to be placed on a horizontal plane, and the product will automatically emit laser lines in horizontal and vertical directions, with an actual angle of no more than 3°. Pulse mode: If used outdoors, the laser line will be weaker. In this mode, users can pair additional laser-receiving devices with the device, and the laser line can be seen up to 45 meters away. Package Includes: 1 x self-leveling 360° Cross Line Laser Level 1 x laser level tripod 4 x alkaline AA Batteries 1 x Carry Pouch 1 x L-shape Bracket 1 x Operator’s manual Specifications: Laser Output : 505-520nm, Class ll laser, maximum laser output.