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532nm Green 5mw (SewellDirect - Ebay)(way over-spec) 532nm Green 50mw (LED Shoppe)(way under-spec, free replacement received - next one below) 532nm Green 50mw (LED Shoppe)(at least on-spec, but very likely over-spec) 405nm Violet 5mw (Wlaser - Ebay)(excellent and well worth the low price !) (2) Red Laser/White LED combo keychain (LED Shoppe)(excellent for the very low price !) Red Laser(many years old, just recently stopped working about Sept/Oct 2010) (No LPM so I have to estimate power on the above lasers)