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:stp-stp1-11/unknown
accepteddisputed
movement
STP1-11
⟨1971 or later⟩ range only — no source gives an introduction yearderived from dated relatives · accepted
not before 1971
ETA 2824 · introduced 1971 (sourced)
not before 1955
Eterna 1427 · introduced 1955 (sourced)
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
STP1-11
movementproducer: Swiss Technology Production (STP)
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any STP1-11 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.
Specifications
| Property | Value | Scope | Status | Sources |
|---|---|---|---|---|
Jewels build.jewel_count | 26 | — | accepted | |
Lift angle esc.lift_angle_deg | 52 deg | — | accepted | |
Movement diameter geom.diameter_mm | 26 mm | — | accepted | |
Movement height geom.height_mm | 4.6 mm | — | accepted | |
Swiss movement origin.swiss_movement | yes | — | accepted | |
Frequency osc.frequency_vph | 28800 vph | — | accepted | |
Power reserve (typical) power.reserve_typical_h | 44 h | — | accepted | |
Winding direction wind.direction | bidirectional | — | accepted | |
Hacking seconds wind.has_hacking_seconds | yes | — | accepted | |
Winding mode wind.mode | automatic | — | 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 · 3
Where this construction came from. Read up the arrows.
- ETA 2824-2clone of
- ETA 2824clone ofrevision ofdepth 2
- Eterna 1427clone ofderived fromdepth 2
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 · 1
Stored in a different table from descent. A successor is not a child.
- STP1-21successor of
succession within the clone line itself; no parts continuity is asserted by the source
Used by
3
models
3
brands
3
grade unknown
grain 1 family · 2 model — the count above mixes levels. A family record is one the source states a movement for family-wide; a reference record is one case reference. They are not the same unit and are never summed silently.
- Mr Jones Watches1 modelmodel:mr-jones-watches/a-perfectly-useless-afternoon-mechanical
- Méraud1 modelmodel:meraud/bonaire
- Riskers1 modelmodel:riskers/prolog-i-and-chapter-i
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
- 1Caliber Cornerhttps://calibercorner.com/stp-caliber-stp1-11/curated dbtier 2retrieved 2026-08-245 facts on this pagecited, never crawled
- 2Caliber Cornerhttps://calibercorner.com/stp-caliber-stp1-11curated dbtier 2retrieved 2026-09-088 facts on this pagecited, never crawled
- 3Monochrome Watcheshttps://monochrome-watches.com/swatch-groups-powermatic-movement-a-powerful-entry-level-engine/presstier 2retrieved 2026-08-252 facts on this page
- 4Internet Archivehttps://web.archive.org/web/2021/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2824archivetier 2retrieved 2026-08-242 facts on this page
- 5Internet Archivehttps://web.archive.org/web/2023/https://watchbase.com/eta/caliber/2824-2archivetier 3retrieved 2026-08-243 facts on this page
- 6Caliber Cornerhttps://calibercorner.com/eta-caliber-2824-2/curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
- 7Internet Archivehttps://web.archive.org/web/2021/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2824_2archivetier 2retrieved 2026-08-242 facts on this page
- 8Caliber Cornerhttps://calibercorner.com/eta-caliber-2836-2/curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
- 9professionalwatches.comhttps://professionalwatches.com/tissot-caliber-c07-111/presstier 2retrieved 2026-08-241 fact on this page
- 10chrono24.comhttps://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
- 11Caliber Cornerhttps://calibercorner.com/tissot-caliber-powermatic-80/curated dbtier 2retrieved 2026-08-243 facts on this pagecited, never crawled
- 12watchuseek.comhttps://www.watchuseek.com/threads/powermatic-80.5500630/page-2forumtier 4retrieved 2026-08-242 facts on this page
- 13Caliber Cornerhttps://calibercorner.com/eta-2824-clones/curated dbtier 2retrieved 2026-08-2410 facts on this pagecited, never crawled
- 14chinesewatchwiki.nethttps://chinesewatchwiki.net/Clone_movementswikitier 3retrieved 2026-08-243 facts on this page
- 15Caliber Cornerhttps://calibercorner.com/hk-precision-technology-caliber-pt5000/curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
- 16Watchguy (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
- 17chinesewatchwiki.nethttps://chinesewatchwiki.net/Tianjin_Seagullwikitier 3retrieved 2026-08-242 facts on this page
- 1817jewelshttps://17jewels.info/movements/s/sea-gull/sea-gull-st2130/curated dbtier 3retrieved 2026-08-241 fact on this page
- 19Caliber Cornerhttps://calibercorner.com/sellita-caliber-sw200-1/curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
- 20watchrepairtalk.comhttps://www.watchrepairtalk.com/topic/10405-sellitta-sw200-1-eta-2824-2-parts-interchangeability/forumtier 4retrieved 2026-08-241 fact on this page
- 21
- 22Monochrome Watcheshttps://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
- 23Monochrome Watcheshttps://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
- 24
- 25Internet Archivehttps://web.archive.org/web/20191021052603/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Eterna_12824archivetier 2retrieved 2019-10-211 fact on this page
- 26Internet Archivehttps://web.archive.org/web/20191021031111/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Eterna_12825archivetier 2retrieved 2019-10-211 fact on this page
- 27Internet Archivehttps://web.archive.org/web/20171031000436/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&143&2uswk&Longines_633_1archivetier 2retrieved 2017-10-311 fact on this page