... 637nm Red, different from normal 650nm Red, 637nm Red is very thin! very bright! very beautiful!Small size laser light ... Dichro, for easy Adjustment!XTRA 5W RGB Laser Light637nm Red> 1000mW, Analogue532nm Green> 2000mW, Analogue445nm Blue> 2000mW, AnalogueScanner System ... switch-Applicable for Disco, Pub, Bar, Clubs, large stage, entertainment center, trade show, corporate special events, casinos, ...