While the product is in operation, be careful not to expose your eyes to the emitting laser beam (red light source). Exposure to a laser beam for an extended time may be hazardous to your eyes. Do not stare directly into the beam or view directly with optical instruments or set up the laser at eye level. Do not disassemble the laser tool. There are no user serviceable parts inside. Do not modify the laser in any way. Modifying the tool may result in hazardous Laser Radiation Exposure. Do not operate the laser around children or allow children to operate the laser. An exposure to the beam of a Class 2 laser is considered safe for a maximum of 0.25 seconds. Eyelid reflexes will normally provide adequate protection.