Chronoswiss cal C741 S

Chronoswiss cal C741 S
(based on ETA/Valjoux 7750)
Automatic winding, 28,800 vph, 25 jewels, power reserve 42 hours
Function: hour, minute, subsidiary second, chronograph
Diameter: 30.00mm
Thickness: 7.90mm
Balance spring: flat hairspring
Remarks: movement completely skeletonized (spark erosion)