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    Guessing the power

    My second ever laser arrived (the first was a tiny <5mW 405nm pen). Ordered it from Aliexpress at around $15, it's one of those Laser 303's hosts with a 532nm DPSS running on a single 18650, 4200mAh 3.7V. My question is: What do you think is this laser's actual power? After (in some cases...