ARM21-M
Calibre ARM21-M is Armin Strom’s skeletonised manual-wind double barrel movement with a 7-day power reserve and small seconds.
Functions
Hour, minute, small second
Impulse
Double going barrel
Winding-mechanism
Manuel
Plate and bridges
Plate and bridges are decorated at the highest quality level
Regulating system
Flat hairspring with a variable inertia balance wheel
Frequency
25,200 vph
Number of jewels
35
Number of individual parts
194
Diameter
36,60 mm
Height
6,00 mm
Power reserve
7 days
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