Advanced red light therapy for face and neck. Our LED Combo includes our PRANA LED Mask and Chin2Chest LED Device for maximum LED coverage. Targeted decolletage, face and neck red light therapy Super-pulsed light technology (100Hz) to aid absorption of skincare products 306 Light Emitting Diodes [LED's] (Mask 138 + C2C 168) Unique sub-mental flap to treat chin area 4 modes: Red + Near Infrared, Red only, Near Infrared only, Mask has an additional Magenta mode (Red + Blue) 3 wavelengths: red (630 + 660nm), near infrared (850nm), blue (415nm - mask only) Irradiance 40-45mw/cm2 Optional eye protectors are included Medical grade, FDA cleared, MDSAP certified Warranty - 24 months from date of purchase *If you are sensitive to light-induced headaches or solar urticaria, do not purchase this product.