Cvstos Jetliner II Steel, 41 mm or 45 mm. Cvstos CVS410 Self-winding mechanical, Black PVD treatment or rhodiated, Skeletonized, with function Hour, minute, seconds, Skeletonized date disc.
Case
Challenge II or Challenge II GT, Tonneau-shaped 53.7 x 41 mm, Tonneau-shaped 59 x 45 mm
Material & Color
Steel
Crystal
Sapphire with none-reflective coating on both sides. Caseback Open with sapphire crystal
Crown
Screw-down, polished Titanium Grade 5 or 5N Red Gold, rubber insert