Manufacturer
Swiss Technology Production (STP)
Attribution is time-dependent in this model: a design keeps its identity when a company is absorbed, and only the maker record moves. Every row of the designs table below carries the source for its own attribution.
Family lines
2 designs are attributed to Swiss Technology Production (STP). 1 of them sits in 1 recorded family line under the Heritage sense of the word — it is drawn below. The other 1 stands alone in this sense, and no other sense of “family” puts it in one either: this corpus records no relative for it — not that none exists.
Other senses of “family”2 lines
A cluster profile is a rule for what counts as descent, not an opinion about it. These are the lines this maker’s designs sit in under the site’s other rules — a broader one keeps edge types that the Heritage sense does not traverse, so the same root can appear here with more members. Nothing below is a relationship the corpus does not hold; it is the same claims read under a different filter, and each view says on its own page which edge types it traversed.
| Line | Sense | Calibers | This maker’s |
|---|---|---|---|
| ETA 2804-2 | Everything (debug) | 28 | 1 |
| ETA 2804-2 | Based-on star (WatchBase sense) | 28 | 1 |
Corporate history
These edges move ownership and names, never designs. This is why “who made the 7750 in 1978” and “who makes it now” are different questions with different answers about the same construction.
| From | Relation | To | Period | Status | Claim |
|---|---|---|---|---|---|
| Swiss Technology Production (STP) | owned by | fossil-group | — | accepted | cbf7d9f1c76903bb4 |
The export gives these edges a claim id but no inline reference, so the claim id is shown as the citation anchor rather than a source link.
Designs attributed to Swiss Technology Production (STP)
| Designation | Role | Attributed | Introduced | Family | Sources |
|---|---|---|---|---|---|
| STP1-11 | producer | no dates given | — | 28 calibers | |
| STP1-21 | producer | no dates given | — | stands alone |
Sources
- 1Internet Archivehttps://web.archive.org/web/2023/https://watchbase.com/eta/caliber/2824-2archivetier 3retrieved 2026-08-243 facts on this page
- 2Caliber Cornerhttps://calibercorner.com/eta-caliber-2824-2/curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
- 3Internet Archivehttps://web.archive.org/web/2021/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2824archivetier 2retrieved 2026-08-241 fact on this page
- 4Internet 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
- 5Caliber Cornerhttps://calibercorner.com/eta-caliber-2836-2/curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
- 6Monochrome Watcheshttps://monochrome-watches.com/swatch-groups-powermatic-movement-a-powerful-entry-level-engine/presstier 2retrieved 2026-08-241 fact on this page
- 7professionalwatches.comhttps://professionalwatches.com/tissot-caliber-c07-111/presstier 2retrieved 2026-08-241 fact on this page
- 8chrono24.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
- 9Caliber Cornerhttps://calibercorner.com/tissot-caliber-powermatic-80/curated dbtier 2retrieved 2026-08-243 facts on this pagecited, never crawled
- 10watchuseek.comhttps://www.watchuseek.com/threads/powermatic-80.5500630/page-2forumtier 4retrieved 2026-08-242 facts on this page
- 11Caliber Cornerhttps://calibercorner.com/eta-2824-clones/curated dbtier 2retrieved 2026-08-2410 facts on this pagecited, never crawled
- 12chinesewatchwiki.nethttps://chinesewatchwiki.net/Clone_movementswikitier 3retrieved 2026-08-243 facts on this page
- 13Caliber Cornerhttps://calibercorner.com/hk-precision-technology-caliber-pt5000/curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
- 14Watchguy (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
- 15chinesewatchwiki.nethttps://chinesewatchwiki.net/Tianjin_Seagullwikitier 3retrieved 2026-08-242 facts on this page
- 1617jewelshttps://17jewels.info/movements/s/sea-gull/sea-gull-st2130/curated dbtier 3retrieved 2026-08-241 fact on this page
- 17Caliber Cornerhttps://calibercorner.com/sellita-caliber-sw200-1/curated dbtier 2retrieved 2026-08-242 facts on this pagecited, never crawled
- 18watchrepairtalk.comhttps://www.watchrepairtalk.com/topic/10405-sellitta-sw200-1-eta-2824-2-parts-interchangeability/forumtier 4retrieved 2026-08-241 fact on this page
- 19
- 20Monochrome 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
- 21Monochrome 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
- 22
- 23Caliber Cornerhttps://calibercorner.com/stp-caliber-stp1-11/curated dbtier 2retrieved 2026-08-243 facts on this pagecited, never crawled
- 24Internet 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
- 25Internet 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
- 26Internet 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