ETA SA JEROME-RJ2000-A

The JEROME-RJ2000-A is a manual-winding mechanical movement manufactured by ETA SA, based on the caliber 2892-A2 with a custom module added. It operates at 28,800 vph and features a jumping hour complication paired with a retrograde display, along with sweep seconds. The movement's most distinctive element is its long arm and spring mechanism that guides the hour—jumping each hour before retreating—a system paired with bridges shaped like aircraft and spacecraft. Designed collaboratively by Manuel Emch, Jean-Marc Wiederrecht, and Alain Silberstein, it was used in the Romain Jerome Spacecraft and Subcraft limited editions. Production was limited to 99 pieces per model.