In the spectrum of visible light, no color has a higher frequency than violet, the last wavelength before the transition to invisible ultraviolet light. When Zenith searched for a unique color to use for a new variant of the ultra high frequency Defy 21 1/100 second chronograph, then, violet was the natural choice. The resulting […] The post Zenith Debuts The Defy 21 Ultraviolet Chronograph appeared first on aBlogtoWatch.

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