... Detail:within 7 daysSpecificationsLED beauty equipment,Light wave : 200-900 nm,red,yellow,green,blue,purple,laser,1-30hz Energy : 20 ... aging pigment to keep skin smooth and bright.5. Purple light:Red and blue light the dual band, it combine both the effectiveness ... , improve fine lines and flabby skin. Light wave : 200-900 nmColor : red,yellow,green,blue,purple,laserFrequency :1-30hzEnergy : 20 J