... :· Strong power output make big spot size treatment available, and with adjustable power supply, spot size adjustable too.· Pulse width less than ... Q switch laser Function:· 1064nm suitable for: birth mark, coffee spot, freckle, senile plaque, pigment from outside injure, black, blue ... etc.· 532nm suitable for: red and brown pigment, red spot and mole, capillarectasis and brandy nose etc. Q switch ...