Unitas
Tramelan, Switzerland · Est. 1926
Founded by Ami Sandoz
Unitas was a Swiss ébauche manufacturer based in Tramelan, producing large hand-wound movements beloved by small brands and custom watchmakers. The Unitas 6497/6498 remain among the most widely used movements in independent watchmaking.
- Founded
- 1926
- Headquarters
- Tramelan, Switzerland
- Group
- Swatch Group
- Price Segment
- Entry
- Status
- Defunct
Ceased: 2003
Unitas was folded into ETA SA during the Swatch Group's consolidation of movement production. The Unitas 6497/6498 movements continue under ETA's umbrella.
The heartbeat of a thousand brands — Unitas movements ticked inside watches that bore every name but its own.
Key Collections
- Calibre 6497 — A large 16½-ligne hand-wound movement with small seconds at 9 o'clock, renowned for its robustness and visibility, making it the foundation for countless pilot and military-style watches from independent makers.
- Calibre 6498 — The sister movement to the 6497, distinguished by its small seconds subdial positioned at 6 o'clock, offering watchmakers an alternative dial layout whilst maintaining the same reliable architecture.
- Calibre 6300 Series — A family of smaller ébauche movements produced for dress watches and more compact timepieces, demonstrating Unitas's versatility beyond their signature large-format calibres.
Timeline
- 1926 — Unitas SA founded in Tramelan by Ami Sandoz, establishing production of ébauche movements for the Swiss watch industry.
- 1932 — Unitas becomes part of Ébauches SA, the consortium of Swiss movement manufacturers formed to consolidate the fragmented ébauche industry.
- 1950 — Introduction of the 6497 and 6498 calibres, large pocket watch movements that would later become iconic in wristwatch applications.
- 1983 — Ébauches SA merges into the newly formed SMH (later Swatch Group), bringing Unitas under broader corporate ownership.
- 2003 — Unitas SA formally dissolved and absorbed into ETA SA as Swatch Group consolidates movement production; the 6497/6498 continue under ETA branding.
Frequently Asked Questions about Unitas
- When did Unitas stop making watches?
- Unitas ceased to exist as an independent entity in 2003 when Swatch Group folded the company into ETA SA. However, Unitas never produced complete watches—they manufactured ébauche movements supplied to other watchmakers.
- Are Unitas movements still valuable?
- Original Unitas-branded movements, particularly the 6497 and 6498 calibres, remain highly valued by collectors and independent watchmakers for their reliability, serviceability, and large size that showcases hand-finishing. Pre-ETA examples command modest premiums.
- Can I still buy a Unitas movement today?
- The movements continue in production under the ETA name as the ETA 6497-1 and 6498-1, though Swatch Group's restrictions on third-party supply have made them less accessible to independent brands than in previous decades.
- Why are Unitas movements so popular with independent watchmakers?
- The 6497 and 6498 calibres offer an ideal combination of large size for visibility and decoration, straightforward hand-wound operation, proven reliability, and relative affordability—making them perfect canvases for custom finishing and modification.
- What is the difference between Unitas 6497 and 6498?
- Both movements share identical dimensions and architecture; the sole difference lies in the position of the small seconds subdial—at 9 o'clock on the 6497 and at 6 o'clock on the 6498—allowing watchmakers to choose their preferred dial layout.