Adjustable beam for your need and purpose. Human eye is more sensitive to green color and this laser pointer is much more noticeable than other light colors. A best suitable kit for astronomers, professors, teachers, doctors, student presentations and etc. Big green beam laser light pen. Switch on/off at the end of the laser pen body. Powered by one 16340 battery (Battery included). 200mW green laser, is ready to work for your purpose. Light source: 532nm/200mW green laser module. Low consumption.
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