I learn something today and would like to share with other members who are new to watch terms.
The terms "Swiss Haute Horlogerie" refers to manufacturer who develop and made all parts/pieces of a watch main components without using parts from other manufacturer. All are made in-house from screws to the casing of a watch.
Famous haute horlogerie are Patek Philippe, Blancpain, Jaeger Le-Coutre, Audemars Piguet, Vacheron Constantin, Ulysse Nardin, Piaget, Zenith, Rolex, Roger Dubois, Franck Muller etc and concentrated at cities like Geneva, Bienne, Besel, Le-Locle, Neuchatel, dan Schaffhausen in Switzerland.
Other Swiss manufacturer may rely on ebouche(or base movement) for thir own production. Nearly 80% of watch producer in Switzerland rely on ETA (ETA Montres S.A.) – the biggest ebouche producer from Switzerland. Brands like Omega, Tissot, Longines, TAG Heuer, Oris, Hublot, Fortis, Swatch, Breitling and many more used ebouche /base movement made by ETA. Some change certain critical parts in the ebouche ETA like mainspring barrel, regulator, escapement mechanism, balance wheel, hairspring, dan winding system to module or their own invented parts to give better accuracy as claimed by them. ETA movement modified by them usually used a different name.
Between the years 1990s - mid 2000, many watch producer from US, Italy, France, German, shifted their factory to Switzerland to get the "SWISS MADE" endorsement. The watch producers are Ball, Panerai, Graham, Mont Blanc, Louis Vitton, Hermes, Bvlgari, Hermes, Chanel etc. Reason being the general public perception of "SWISS MADE" is of quality, prestigious and reliable.
There are majority of watch producers not based in Switzerland but based in countries like US, Hong Kong, Sweden, German etc who rely on ETA movement. Only a couple of independent watch producer like A. Lange & Sohné, Union Glashütte, dan Glashütte Original who produced their own movement. The producer who uses ETA movement will print "SWISS MOVT" (if using Miyota of Japan, will print "JAPAN MOVT" at the watch dial.