This is a joke? We must stop buying these effects grotesque! Talk about laser when you know what you speak. The sources are not stabilized Peltier (lifetime reduced by half, at best), the scanners are in fact common motuers step inccapble to graphics, the powers announced are false (one was measured at 250mW 90mW, product at Mac-Mah) lasers that are a rip off!! Do not buy these products especially not, check properly before you go and see the forums of lasers to understand what a laser ...... at least the product Mac Mah-are not.