CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeISA S280 — Heritage family: 28 calibers, 29 sourced lineage links, 3 contested, and 2 related edges that are not descent (both contested).Drag to explore.
100%overlaydrag to pan · hover a caliber to isolate its line · scroll the page normallyopen the full family view →
CONTESTED · 2 POSITIONSCONTESTED · 1 POSITIONSno derivation between ?drop-in for ?derived from ?variant of ?revision ofderived fromderived fromvariant ofderived fromvariant ofvariant ofvariant ofclone ofclone ofclone ofclone of ?clone ofclone ofclone ofclone ofclone ofclone ofrevision ofrevision ofclone ofclone ofclone ofclone ofébauche ofébauche ofébauche ofETA 2804-2 — open caliber pageETA 2804-2—ETA SA Manufacture Horlogère…1 exec · grade ?ETA 2824 — open caliber pageETA 28241971ETA SA Manufacture Horlogère…1 exec · grade ?ETA 2824-2 — open caliber pageETA 2824-21982ETA SA Manufacture Horlogère Suisse7 execETA 2826-2 — open caliber pageETA 2826-2—ETA SA Manufacture Horlogère…1 exec · grade ?ETA 2836-2 — open caliber pageETA 2836-2—ETA SA Manufacture Horlogère…1 exec · grade ?ETA C07.111 — open caliber pageETA C07.1112011ETA SA Manufacture Horlogère…2 exec · grade ?ETA C07.141 — open caliber pageETA C07.141—ETA SA Manufacture Horlogère…1 exec · grade ?ETA C07.611 — open caliber pageETA C07.611—ETA SA Manufacture Horlogère…2 exec · grade ?ETA C07.811 — open caliber pageETA C07.811—ETA SA Manufacture Horlogère…1 exec · grade ?Eterna 12824 (ETA 2824) — open caliber pageEterna 12824 (ETA 282…1975maker not sourced1 exec · grade ?Eterna 12825 (ETA 2824) — open caliber pageEterna 12825 (ETA 282…1975maker not sourced1 exec · grade ?Eterna 1427 — open caliber pageEterna 14271955Eterna …1 exec · grade ?Ginault 7275 — open caliber pageGinault 7275—Ginau…1 exec · grade ?Hangzhou 6300 / 6301 — open caliber pageHangzhou 6300 / 6301—Hangzhou Watch Facto…1 exec · grade ?Hangzhou 6311 — open caliber pageHangzhou 6311—Hangzhou Watch Facto…1 exec · grade ?PT5000 — open caliber pagePT5000—H.K. Precision Technology (H…1 exec · grade ?ISA S280 — the caliber this page is aboutISA S280—ISA (Industrie Suisse d'Auto…1 exec · grade ?Landeron L24 — open caliber pageLanderon L24—Landeron / DEPA Swiss1 exec · grade ?Longines 633.1 (ETA 2824) — open caliber pageLongines 633.1 (ETA 282…1971maker not sourced1 exec · grade ?Liaoning Peacock SL-3000 — open caliber pageLiaoning Peacock SL-3000—Liaoning Peacock1 exec · grade ?Sea-Gull ST21 — open caliber pageSea-Gull ST21—Tianjin Sea-Gull Watch Group1 exec · grade ?Sea-Gull ST2130 / TY2130 — open caliber pageSea-Gull ST2130 / TY2130—Tianjin Sea-Gull Watch Group1 exec · grade ?Sellita SW200 — open caliber pageSellita SW2002003Sellita Watch Co S.A.1 exec · grade ?Sellita SW200-1 — open caliber pageSellita SW200-1—Sellita Watch Co S.A.8 execSellita SW200-2 Power+ — open caliber pageSellita SW200-2 Power+—Sellita Watch Co S.A.1 exec · grade ?Soprod P024 — open caliber pageSoprod P024—Soprod …1 exec · grade ?STP1-11 — open caliber pageSTP1-11—Swiss Technology Production …1 exec · grade ?Valanvron VAL-24 — open caliber pageValanvron VAL-24—Valanvr…1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 28Everything (debug) · 28Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 28Open the full family view →

movement

ISA S280

ISA (Industrie Suisse d'Automation)⟨1971 or later⟩ range onlydesign:isa-s280compare specs · 4
⟨1971 or later⟩ range only — no source gives an introduction yearderived from dated relatives · accepted
not before 1971
ETA 2824 · introduced 1971 (sourced)you cannot clone what does not exist · ← clone of · ← revision of · rule IR-3 · depth 2 · acceptedthe anchor's own source
not before 1955
Eterna 1427 · introduced 1955 (sourced)you cannot clone what does not exist · ← clone of · ← derived from · rule IR-3 · depth 2 · 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
ISA S280
movementproducer: ISA (Industrie Suisse d'Automation)
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any ISA S280 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.

unknownsynthetic
evidence: unknown

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

exec:isa-s280/unknown

Specifications

No attribute has been recorded for this design yet. Nothing is inferred from its relatives: a value on a parent or a sibling is never inherited.

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 · 3

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.

Sources

  1. 1
    Caliber Corner
    https://calibercorner.com/eta-2824-clones/
    curated dbtier 2retrieved 2026-08-2411 facts on this pagecited, never crawled
  2. 2
    Monochrome Watches
    https://monochrome-watches.com/swatch-groups-powermatic-movement-a-powerful-entry-level-engine/
    presstier 2retrieved 2026-08-252 facts on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/2021/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2824
    archivetier 2retrieved 2026-08-242 facts on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/2023/https://watchbase.com/eta/caliber/2824-2
    archivetier 3retrieved 2026-08-243 facts on this page
  5. 5
    Caliber Corner
    https://calibercorner.com/eta-caliber-2824-2/
    curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
  6. 6
    Internet Archive
    https://web.archive.org/web/2021/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2824_2
    archivetier 2retrieved 2026-08-242 facts on this page
  7. 7
    Caliber Corner
    https://calibercorner.com/eta-caliber-2836-2/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
  8. 8
    professionalwatches.com
    https://professionalwatches.com/tissot-caliber-c07-111/
    presstier 2retrieved 2026-08-241 fact on this page
  9. 9
    chrono24.com
    https://www.chrono24.com/magazine/eta-movements-from-the-2824-2-to-the-powermatic-80-p_80840/
    presstier 2retrieved 2026-08-241 fact on this page
  10. 10
    Caliber Corner
    https://calibercorner.com/tissot-caliber-powermatic-80/
    curated dbtier 2retrieved 2026-08-243 facts on this pagecited, never crawled
  11. 11
    watchuseek.com
    https://www.watchuseek.com/threads/powermatic-80.5500630/page-2
    forumtier 4retrieved 2026-08-242 facts on this page
  12. 12
    chinesewatchwiki.net
    https://chinesewatchwiki.net/Clone_movements
    wikitier 3retrieved 2026-08-243 facts on this page
  13. 13
    Caliber Corner
    https://calibercorner.com/hk-precision-technology-caliber-pt5000/
    curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
  14. 14
    Watchguy (service logs)
    https://watchguy.co.uk/comparison-sea-gull-st2130-eta-2824-2-peacock-sl3000/
    first handtier 2retrieved 2026-08-241 fact on this page
  15. 15
    chinesewatchwiki.net
    https://chinesewatchwiki.net/Tianjin_Seagull
    wikitier 3retrieved 2026-08-242 facts on this page
  16. 16
    17jewels
    https://17jewels.info/movements/s/sea-gull/sea-gull-st2130/
    curated dbtier 3retrieved 2026-08-241 fact on this page
  17. 17
    Caliber Corner
    https://calibercorner.com/sellita-caliber-sw200-1/
    curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
  18. 18
    watchrepairtalk.com
    https://www.watchrepairtalk.com/topic/10405-sellitta-sw200-1-eta-2824-2-parts-interchangeability/
    forumtier 4retrieved 2026-08-241 fact on this page
  19. 19
    Sellita SA
    https://www.sellita.ch/
    manufacturertier 1retrieved 2026-08-241 fact on this page
  20. 20
    Monochrome Watches
    https://monochrome-watches.com/a-technical-perspective-industry-news-sellita-sw200-2-power-automatic-movement-upgrade-specs/
    presstier 2retrieved 2026-08-241 fact on this page
  21. 21
    Monochrome Watches
    https://monochrome-watches.com/inside-sellita-the-giant-supplier-of-mechanical-movements-behind-the-scenes-watch-industry/
    presstier 2retrieved 2026-08-241 fact on this page
  22. 22
    Wikipedia
    https://en.wikipedia.org/wiki/Sellita
    wikitier 3retrieved 2026-08-241 fact on this page
  23. 23
    Caliber Corner
    https://calibercorner.com/stp-caliber-stp1-11/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
  24. 24
    Internet Archive
    https://web.archive.org/web/20191021052603/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Eterna_12824
    archivetier 2retrieved 2019-10-211 fact on this page
  25. 25
    Internet Archive
    https://web.archive.org/web/20191021031111/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Eterna_12825
    archivetier 2retrieved 2019-10-211 fact on this page
  26. 26
    Internet Archive
    https://web.archive.org/web/20171031000436/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&143&2uswk&Longines_633_1
    archivetier 2retrieved 2017-10-311 fact on this page