Armin Strom caliber ASS20 is based on caliber ASB19 and features triple pocket watch style bridges on the dial side, a Geneva-drive equal force “stop work” barrel which provides constant force to the balance system.
Caliber: ASS20
Release Date: March 2022
Country: Swiss made
Type: Automatic
Dimensions: 35.53 mm/8.42 mm
Total Components: 273
Jewels: 30
Oscillating Frequency: 25,200 vph (3.5Hz)
Power Reserve: 72-hours
Functions: Hours, minutes, small seconds, power reserve indicator, on-demand date with rapid corrector
Balance Wheel: Variable inertia, free-sprung with 4 regulating screws
Rotor: micro-rotor
Finishing: hand beveling and polishing, perlage, straight graining, circular graining, frosting, Geneva stripes
Special: Geneva-drive equal force barrel with stop-work function, column-wheel date