WatchesAtlas / Watch knowledgeThe Watch EncyclopediaUnderstand the details that make a watch.Explore watches ↗Find a term or abbreviationCategoryAll categoriesMovements & mechanismsComplications & displaysCases, dials & braceletsFinishing & craftsmanshipPerformance & measurementModern watch technologyCollecting, condition & careSearchAllABCDEFGHIJKLMNOPQRSTUVWXYZ1 termsClear filtersModern watch technologyDual Impulse EscapementGrand Seiko's name for an escapement architecture using particular direct and indirect impulse arrangements.↗