Portable Home Use LED Face Light Therapy 630nm 660nm Red Light Combined With 850nm Infrared Light to Relieve Joint Muscle PainSpecification:Power: 9W(3*3W)Input Voltage/Current: 5V/1A Shell Material: Stainless Steel Light Denisty: >50mW/cm² Spectrum: 630:660:850Number of LEDs: 630*1,660*1,850*1Dimen..