... Detail:within 7 daysSpecificationsLED beauty equipment,Light wave : 200-900 nm,red,yellow,green,blue,purple,laser,1-30hz Energy : 20 ... sting, injured area of laser and the technology of photon, deposition of pigmen 1. Red Light at 640 nm:Increases collagen ... in proper sequence, it can accelerate metabolism effectively.6. Laser light:Penetrate deep layer of skin, accelerate active tissue's metabolism ...