... .(2). One hand-piece with seven different treatment heads for Freckle dispelling, Skin Rejuvenation, Pores Shrinking, Wrinkle Smoothening, ... long time without interval.(7). Large Light Spot (15X50mm2) for quicken the treatment Wavelength560-1200nm ,640-1200nm (standard) ... 430nm,480nm, 530nm, 590nm, 690nm for option.Energy Density0-50J/cm2Pulse Quantity1-6Pulse Width1-10 msRepeat ...