IonSpec Professional PUF1 is a specially designed 4-in-1 eyewear that can be wear as a standalone or over the eyeglass, to protect you from blue-light and UV400 radiation. It can filter up to 50% blue light spectrum (400nm-500nm wavelength) and has higher filtering strength as compared to standard 5-in-1 IonSpec. Aside blue-light filtering, the lens also offers UV400 protection, serving as a protective sunglass for outdoor use. The specially designed temple offers negative ions and far infra ray, helps improving wearer’s blood circulation around temple areas, relieving tiredness and eyestrain.
PUF01 Specification: 58 (Diameter) -15 (Bridge) -130 (Temple)
As this is an over-the-glass design, the actual Temple length is around 145mm, which is suitable for most people.