CHALLENGE GT case Tonneau-shaped, 59mm x 45mm
Materials Black Ergal, titanium, Black Plasma Titanium, steel, 5N red gold. Polished and satin-finished case
Caseback Open with sapphire crystal.
Crystal Sapphire, none-reflecting coating 2 faces.
Water-resistance 100 meters
Screws Polished titanium grade 5, exclusive CVSTOS TECHNOLOGY pattern.
Crown Screw-down, polished grade 5 titanium, Nitril (NBR®) insert.
Push-pieces Red anodised Ergal and polished grade 5 titanium.
Dial Sapphire, non-reflective coating, exclusive decoration (open worked dial).
Indexes Super-Luminova treated.
Hands Pierced, chrome or Black Plasma treated and Super-Luminova treated.
CalibreCVSTOS 555 engineered by Pierre-Michel Golay
- grade 5 titanium main plate
- red anodised Ergal back bridges
- CVSTOS TECHNOLOGY grade 5 titanium back central bridge dual frame
- CVSTOS EXCLUSIVE escapement mysterious tourbillon (variable inertia)
- mysterious tourbillon, 3x20 seconds indicator
- split seconds chronograph (1/5th second indication)
- chronograph 30-minute counter at 3 o’clock
- 12-hour counter at 9 o’clock
- power-reserve indicator at half past ten, also used as days counter (potential
6 days in a row)
- clock indicator at 12 o’clock,
- manual winding,
Power-reserve 8 hours
Frequency 18,000 vibrations per hour
Bracelet or Strap Black rubber (NBR®), alligator leather or Alcantara® (customized on demand.
Buckle Folding clasp
Limited series 5 pieces per year (one of each material)