The Armin Strom Gravity Equal Force is the world’s first automatic watch with a constant-force transmission system. By adding a Geneva stop-work mechanism to the mainspring barrel, the movement maintains a steady power flow to the escapement, ensuring accurate timekeeping throughout its run.
Overview
Brand: Armin Strom
Model: Gravity Equal Force
Collection: System 78
Price: £16,500 GBP
Website: arminstrom.com
Specifications
Case Diameter: 41.0mm
Thickness: 11.65mm
Lug to Lug: 48.0mm
Lug Width: 20.0mm
Water Resistance: 30m
Case Material: 316L Stainless Steel
Crystal: Sapphire
Strap/Bracelet: Leather Strap
Design & Wearability
The dial features an off-center sub-dial for timekeeping, balanced by three open-worked bridges that support the micro-rotor, gear train, and constant-force barrel on the front side of the dial.
Movement & Performance
Driven by the in-house automatic caliber ASB19. Running at 25,200 vph, it features a micro-rotor, hand-bevelled bridges, and an innovative stop-work barrel that yields a 72-hour power reserve.
Official Website
Armin Strom Gravity Equal Force product page
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