CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeGrand Seiko 9S86 — Heritage family: 3 calibers, 2 sourced lineage links.Drag to explore.
accepteddisputed

movement

Grand Seiko 9S86

Grand Seikointroduced 2014design:grand-seiko-9s86compare specs · 2
bounding evidence — no range is drawn on the era axis
not before 2009
Grand Seiko 9S85 · introduced 2009 (sourced)you cannot derive from what does not exist · ← derived from · rule IR-2 · depth 1 · acceptedthe anchor's own source

Identity

A caliber is three separate things and this reference keeps them apart: the construction, the names it is sold under, and the article a brand actually bought. A watch model points at an execution — never at a bare construction — which is why “same caliber” is almost never a complete answer.

IDesign — the construction
Grand Seiko 9S86
movementproducer: Grand Seiko
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 2 articles

No source in this corpus states which grade any Grand Seiko 9S86 was bought at. That unknown is stored as a real row rather than left blank, so it can be counted, filtered and excluded from any comparison that would otherwise assume parity.

unknown
evidence: unknownmodified by Grand Seiko9S86
Grand Seiko Standard
Tolerances for this caliber at this grade
Measured
worn claim
Mean rate, centre
3.5 s/d
Mean rate, tolerance
± 4.5 s/d
Power reserve, typical
55 h
Sampling
per unit

These figures belong to this caliber at this grade, and to nothing else. The same grade name on another caliber from the same maker carries different numbers.

exec:grand-seiko-9s86/gs-standard
unknownsynthetic
evidence: unknown
Tolerances for this caliber at this grade
Measured
worn claim
Mean rate, centre
3.5 s/d
Mean rate, tolerance
± 4.5 s/d
Power reserve, typical
55 h
Sampling
per unit

These figures belong to this caliber at this grade, and to nothing else. The same grade name on another caliber from the same maker carries different numbers.

no source states which grade this article was bought at — this row exists so 'unknown' stays countable instead of becoming an assumption

exec:grand-seiko-9s86/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
37—accepted
GMT architecture
cmpl.gmt_architecture
flyer—accepted
Date
disp.has_date
yes—accepted
GMT hand
disp.has_gmt_hand
yes—accepted
Frequency
osc.frequency_vph
36000 vph—accepted
Power reserve (typical)
power.reserve_typical_h
55 h—accepted
Introduced
prod.intro_year
2014—accepted
Movement technology
qz.technology
mechanical_automatic—accepted
Hacking seconds
wind.has_hacking_seconds
yes—accepted
Winding mode
wind.mode
automatic—accepted
Rotor bearing
wind.rotor_bearing
ball_bearing—accepted

Lineage

The same relationships as the tree at the top of this page, with their sources. An absence in a column means no source stated one.

Ancestors · 1

Where this construction came from. Read up the arrows.

Descendants · 0

What came from it — revisions, variants, clones, licensed copies.

None recorded. An absence here means no source stated one, not that none exists.

Related · 0

Stored in a different table from descent. A successor is not a child.

None recorded. An absence here means no source stated one, not that none exists.

Used by

26
models
1
brands
26
grade unknown

grain 26 reference — every record here sits at the same level, so the count is one kind of thing.

Every brand here is on the strength of a source that names a watch and states this movement. Brands that use this caliber and nobody has sourced yet are absent — this is what has been researched, not what exists.

Sources

  1. 1
    grand-seiko.com
    https://www.grand-seiko.com/us-en/collections/movement/mechanical
    manufacturertier 1retrieved 2026-08-241 fact on this page
  2. 2
    grand-seiko.com
    https://www.grand-seiko.com/us-en/collections/movement/mechanical/9s86
    manufacturertier 1retrieved 2026-08-2412 facts on this page
  3. 3
    Monochrome Watches
    https://monochrome-watches.com/grand-seiko-25th-anniversary-calibre-9s-sbgh311-and-sbgr325-introducing-specs-price/
    presstier 2retrieved 2026-08-242 facts on this page
  4. 4
    Caliber Corner
    https://calibercorner.com/grand-seiko-caliber-9s86
    curated dbtier 2retrieved 2026-09-083 facts on this pagecited, never crawled
  5. 5
    grand-seiko.com
    http://www.grand-seiko.com/about/movement/mechanical/
    manufacturertier 1retrieved 2026-08-241 fact on this page
  6. 6
    Monochrome Watches
    https://monochrome-watches.com/seiko-prospex-diver-300m-hi-beat-sla025-baselworld-2018-specs-price/
    presstier 2retrieved 2026-08-241 fact on this page