All high-powered lasers are dangerous and should be used with caution. A direct eye exposure from a laser that is 100mW can cause permanent damage. This is why safety goggles are recommended whenever using this type of laser.
A 5mW laser is considered safe. The Nano 5mW green laser we offer cannot cause harm due to it's low power but direct eye exposure to the beam must still be avoided. It is designed for use in presentations and stargazing.