I did not wrote this. Found this from a Rolex forum, but i find this really enlightening. Credit to the person who posted this. Watch Manufacturer1.Mainly own designs and manufactures all major components of every watch in-house.
Rolex (Shock kif system, escapements hairsprings out sourced and crystals?) Update now use in some models
own in-house hairsprings and paraflex shock system and now own the crystal manufacture side but still out source mainsprings.
Glashütte Original/Union Glashütte (not sure about the crystals)
Harry Winston Fine Timepieces (with collaborators help)
Seiko. Makes everything in-house.
Urwerk. (even crystals designed all in-house)
2.Design and manufactures every movement in-house, but uses suppliers for cases, dials,crystals, etc. A. Lange & Sohne. (big date mechanism designed by JLC)
Blancpain.
Breguet. Citizen.
Philippe Dufour.
Girard-Perregaux.
Jaeger-LeCoultre.
F.P. Journe.
Richard Mille.
Patek Philippe. But even Patek Philippe never made their own movements till the middle 30s.And still use a modded
Lemania's Cal. 2310 as a base for some of there two register m/wind chronographs
Piaget.
Zenith. 3. Designs and manufactures most movements in-house, but also uses supplied movements mostly ETA Based and Lemania. Audemars Piguet.
Parmigiani.
Roger Dubuis.
Vacheron Constantin. uses Lemania's Cal. 2310 as a base ebauche to some of their M/wind cronos
4.Designs and manufactures some movements in-house, but mostly uses supplied ebauches then rework movements. Chopard.
Ulysse Nardin.
Panerai. 5.Manufactures who use supplied ébauche or base movement, but do extensive and substantial in-house modification to movement, that a unique finished movement, only to that said manufacture results. Svend Andersen.
D. Dornblüth & Sohne.
IWC.
Paul Gerber.
Nomos.
Daniel Roth.
6. Designs and manufactures at least most movements in- house group, but uses other suppliers for cases, dials, etc. Jacquet Droz.
Longines.
Omega.
Tissot.
Breitling.
7. Begins with supplied movements, but does additional finishing in-house or in-house-group. Stowa/Jorg Schauer 8.Designs a few movements, receives completed movements, and assembles at least some watches in-house, but most out sourced.
Chronoswiss.
Tag Heuer.9.Outsources all aspects of manufacturing.
All fashion brands.
1
0.Poljot. now produce all in-house movements,for chrono range.
The Chronograph P3133 is based on the Swiss Valjoux 7734 movement,they bought the old tooling and rights.The Val 7734 was
in production from 1969-78 less than 2 million were made.Then the
Russian Poljot firm modified the Val 7734 into the P3133
But most movements that Poljot uses are based on popular Swiss movements,plus today in some of there watches,they use full ETA movements like the 2824.
The P3133 is based on the Valjoux 7734 movement.
The P2612 is based on the AS 1475 (alarm) movement
17-18 Jewel M/W
Below are the technical data of the Valjoux 7734, and a comparison with the Poljot 3133 after the modification.
Valjoux 7734-------------- Poljot 3133
Winding. Handwind.----------- Handwind.
Jewels. 17. ============ 23.
A/h. 18000. ---------- 21600.
P/R 36 hours-------------- 42 hours.
__________________