Challenge Twin-Time
   

 

CHALLENGE case Tonneau-shaped, 53.70mm X 41mm

Materials Steel or 5N red gold. Polished and satin-finished case.
Setting Versions set with diamonds available.
Caseback
Open with sapphire crystal.
Crystal Sapphire, none-reflecting coating.
Water-resistance 100 meters

Screws Polished titanium grade 5, exclusive CVSTOS TECHNOLOGY pattern.
Crown Screw-down, polished titanium grade 5, Nitril (NBR®) insert.
Dial (tonneau-shaped only) sapphire, none-reflective coating, exclusive CVSTOS TECHNOLOGY decoration.

Indexes Chromed and Super-Luminova treated.
Hands Pierced, chromed and Super-Luminova treated.

Calibre CVSTOS 551 Automatic.
Functions Hour, minute, second, large date and second time-zone.
Characteristics Instantaneous date change.
Power-reserve 42 hours
Jewels 21
Rotor Exclusive CVSTOS TUNGSTEN 88 & TITANIUM TECHNOLOGY alloy.
Frequency 28,800 vibrations per hour

Bracelet or Strap Black rubber (Nitril - NBR®), alligator leather or Alcantara® (customized on demand), versions with links.
Buckle Folding clasp