Unitas grew from the watch company of Auguste Reymond, established in 1898 in Tramelan, Switzerland. Reymond acquired the Unitas Watch Company name in 1926 and applied it to his ébauche production. In 1932 the firm joined the Ebauches SA cartel (later ASUAG), cementing its role as a supplier of movement blanks to the Swiss industry. In 1983, Unitas was absorbed into ETA SA, the Swatch Group’s movement manufacturing arm.

Unitas is best known to collectors for the large-format pocket-watch calibers 6497 and 6498 — both 19-ligne hand-wound movements introduced in the 1950s and still produced under the ETA banner. These calibers are widely used by boutique and independent watchmakers seeking a large, legible, easily serviced hand-wound base movement. The 6497/6498 has become the default movement for showcase pocket-watch-style wristwatches.

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Manufacturer Movement
Unitas Manual 38.15 mm
Unitas Manual 38.15 mm
Unitas Manual 41.6 mm
Unitas Manual 41.6 mm
Unitas Manual 41.65 mm
Unitas Manual 41.65 mm
Unitas Manual 41.6 mm
Unitas Manual 41.6 mm
Unitas Manual 37.22 mm
Unitas Manual 37.22 mm
Unitas Manual 37.2 mm
Unitas Manual 37.2 mm
Unitas Manual 39.7 mm
Unitas Manual 39.7 mm
Unitas Manual 38.15 mm
Unitas Manual 38.15 mm
Unitas Manual 37.22 mm
Unitas Manual 37.22 mm
Unitas Manual 29.33 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm
Unitas Manual 23.7 mm