Swiss made, manually wound, 33.50 mm x 4.20 mm, 21 jewels, 135 components, 100-hour power reserve, 3.5Hz (25,200 vph). Hours, minutes, center seconds. Free sprung balance wheel. Unique stop-work declutch mechanism. Finishing includes Geneva stripes, straight graining, circular graining, perlage, frosting, beveled and polished edges, polished countersinks and screw heads. Motor barrel transmission.

Armin Strom caliber AMW21 dial side

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