Hi friend. what we show and illustrate has the correct wavelengths(nm). This is a 7 in 1 device,which includes:(Red Blue White Green Yellow Cyan Purple),the title/pictures/ description are clearly correct color and wavelengths at the beginning of the order link, it cannot be ignored. One color mode only includes one wavelengths, red is 630nm, not 660nm in this device. We only do sincerely business. thanks!