FDA-Cleared 660nm/850nm Dual-Band Red Light Therapy Belt, USB PoweredThis is a dual band red light therapy belt featuring both 660 nm (deep red) and 850 nm (near infrared) wavelengths. Its designed to wrap around your neck, wrists, or ankles with a flexible pad for targeted treatment. Powered via USB, its lightweight, portable, and ideal for both home and office use. Red Light (660 nm): Primarily benefits the surface layer of the skin promotes collagen production, supports skin regeneration, and helps to reduce