Family line
Grand Seiko 9R65
Based-on star (WatchBase sense)3 calibers2 lineage edges0 related edgesdesign:grand-seiko-9r65compare specs · 3
This profile traverses clone_of · derived_from · ebauche_of · revision_of · variant_of and keeps disputed edges. Every edge in this view carries at least one reference.
Same caliber, other senses of “family”Everything (debug) · 3 calibersHeritage · 3 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 1 calibers
Edge types in this family
accepteddisputedcontested region
Generations run left to right, ancestors first, and the axis along the top is ordinal rather than linear: each band is one generation, labelled with the range of sourced introduction years it contains. A band reads “—” when no caliber in it has a year anyone published — the gap is the finding, not a rendering failure. Dotted arcs above and below the drawing are related edges — successor, drop-in, no-derivation — which are stored in a different table from lineage and can never form part of an ancestry path.
Every edge in this view
| Caliber | Relationship | To | Status | Detail | Sources |
|---|---|---|---|---|---|
| Grand Seiko 9R65 | derived from lineage | Seiko 7R68 | accepted | interchange note: Grand Seiko describes the change as an upgrade of the winding system and drive time from the 1999 manual 48-hour Spring Drive; Monochrome names that 1999 caliber as the 7R68. Grand Seiko itself never prints the number 7R68, so the identification of the parent depends on the Monochrome account. · component delta: automatic_module,barrel | |
| Grand Seiko 9R66 | derived from lineage | Grand Seiko 9R65 | accepted | interchange note: Identical jewel count (30), reserve (72 h) and rate (±15 s/month) to the 9R65; the stated delta is the GMT function. Grand Seiko frames it chronologically rather than as "based on". · component delta: complication_module |
Sources
- 1grand-seiko.comhttps://www.grand-seiko.com/us-en/collections/movement/springdrivemanufacturertier 1retrieved 2026-08-241 fact on this page
- 2grand-seiko.comhttps://www.grand-seiko.com/us-en/collections/movement/springdrive/9r65manufacturertier 1retrieved 2026-08-241 fact on this page
- 3Monochrome Watcheshttps://monochrome-watches.com/a-technical-perspective-defining-and-understanding-hybrid-watches/presstier 2retrieved 2026-08-241 fact on this page
- 4grand-seiko.comhttps://www.grand-seiko.com/us-en/collections/movement/springdrive/9r66manufacturertier 1retrieved 2026-08-241 fact on this page