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    $9 Chinese eBay Laser (301) Does Amazing Jobs (How?)

    Hello, recently I have bought a $9 "PM Laser 301" from ebay. The label states that it is <1000mW and class II and wavelength is 532nm +-10. And I put a ICR 18650 samsung battery which was charged at 4.2v. But the problem(s) are these, *It hurts and burns my skin(upper side of my hand) in 2...


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