... 30, 50, 100, 150mW green laser penWell tested, high quality, fast delivery timeFunction: laser pen, laser pointer, Used in many applications ... :Adding extra cooling systemWell tested and high quality green laser pointercontinuous outputUsing long lifetime chip, more than 5000 ... 1000pcs.DANGER: Never look directly into the green laser beam. Never point green laser beam at a person. Do not ...