The Duet® Emerald features guaranteed Z-Bolt® Certified Power for
the brightest possible daylight dot; most visible nighttime beam. Each Z-Bolt®
Certified Power green laser pointer is factory tuned & calibrated, then
tested & certified on a laser power meter - all tested units ship with a
Laser Power Output Certificate. Only premium Z-Bolt® Certified lasers are rated at 4.0 to 5.0 mW
power output and are 2 to 3 times brighter than standard Class IIIa units.
Operating Temperature - 41° ~ 95°F