The Vielight 633 Red is a compact personal photobiomodulation (PBM) device. Its 633 nm wavelength is ideal for systemic photobiomodulation.
The LED of the Vielight 633 Red releases non-coherent cold LED light that is bright red and visible to the human eye.
Similar to the Vielight 633 Red, the Vielight 655 Prime emits a powerful beam within the visible red range in the electromagnetic spectrum.
However, the Vielight 655 Prime utilizes a cold laser beam instead of a LED beam. The efficacy is theoretically similar between the two models.