Case

• Model: Challenge III / Challenge III GT

• Shape & Size:

  • Challenge III: Tonneau-shaped, 53.7 x 41 mm

  • Challenge III GT: Tonneau-shaped, 59 x 45 mm

• Material: 5N Red Gold & Grade 5 Titanium

• Color: 5N Red Gold & Black

• Crystal: Sapphire crystal with anti-reflective coating on both sides

• Caseback: Open caseback with sapphire crystal

Crown & Screws

• Crown: Screw-down, polished Black PVD finish with rubber insert

• Screws: Polished Black PVD, featuring exclusive CVSTOS TECHNOLOGY pattern

Dial

• Numerals: Arabic numerals in exclusive CVSTOS TECHNOLOGY design

• Color: Black & Red

• Indexes: Treated with Super-Luminova

• Hands: Pierced, chromed, and Super-Luminova treated

Movement

• Caliber: Cvstos CVS577

• Type: Self-winding mechanical, skeletonized

• Finish: Black PVD treated or rhodium-plated

• Functions:

  • Chronograph

  • Hour, minute, seconds

  • Power-reserve indicator

• Power Reserve: 48 hours

• Frequency: 28,800 vibrations/hour

• Jewels: 21

Bracelet / Strap

• Options: Alcantara, Alligator leather, or Rubber

• Clasp: Folding clasp