Devoir PDT LED light therapy machine. Calcium H Supplement Features multiple light wavelengths for skin treatment. Devoir Beauty Medicos PDT LED Light Therapy Machine, designed for facial rejuvenation. • Technology: Photodynamic Therapy (PDT) utilizing LED light. • • Wavelengths: Features 7 different light colors (blue, red, green, yellow, purple, orange, and calcium supplement light). • Function: Specifically includes a "Calcium-H- Supplement" light wavelength for skin therapy. ® • Design: Portable, arch-shaped device intended for home or clinical beauty use Great condition, works perfectly. used a few times. All accessories & owners manual included. Missing original box