The Spartan lasers are built with a very compact, military style rain and dust proof metal cases. The Spartan case is comfortable to handle and the on/off switch has been built into the end cap for easy operation. The heat sink design is excellent allowing the Spartans to have a much higher power output than most other pen sized lasers.
http://www.dragonlasers.com/catalog/Blue-Handheld-Laser-473nm-Laser-Spartan-Series-Laser-price0-p-1-c-273.html
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