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Le Locque, Switzerland—Zenith introduces the Defy 21 Ultraviolet chronograph. Named for the invisible high-frequency light at the top of the spectrum, the brand decided to celebrate its highest-frequency Defy 21 chronographby creating it in a violet color.

The color violet has a storied history. In past centuries, it was the most sought-after color dye for garments, the production of which was a closely held secret in some civilizations, such as the Phoenicians. Britain’s Queen Elizabeth I forbade non-royals to wear the color, and the Roman emperor Aurelian reportedly wouldn’t allow his wife to buy a purple shawl because it was more expensive than gold. 

Zenith chose its El Primero 21 chronograph calibre beating at a frequency of 50Hz as the canvas for a new vivid purple watch. Here are the specifications: 

• Key points: Unique Violet 1/100th of a second chronograph movement. Exclusive dynamic signature of one rotation per second. One escapement for the watch (36,000 VpH - 5 Hz); one escapement for the chronograph (360,000 VpH - 50 Hz). Special linear power reserve indicator. TIME LAB Chronometer certified. 
• Movement: El Primero 9004 automatic, ultraviolet finishings. 
• Frequency: 36,000 VpH (5 Hz)

• Power reserve: Approx. 50 hours

• Functions: 1/100th of a second chronograph functions. Chronograph power-reserve indication at 12 o'clock. Hours and minutes in the center. Small seconds at nine o'clock, central chronograph hand, 30-minute counter at three o'clock, 60-second counter at six o'clock. 
• Material: Microblasted titanium

• Water resistance: 10 ATM

• Dial: Special open dial with grey closed chronograph registers

• Hour markers: Rhodium-plated, faceted and coated with Super-
LumiNova SLN C1

• Hands : rhodium-plated, faceted and coated with Super-LumiNova SLNC1

• Bracelet and buckle: Violet fabric effect strap. Microblasted titanium double folding clasp 
• Price: 13,400 CHF 
($14,115 USD)