Q1682401
- Model
- Master Ultra Thin Tourbillon
- Case material
- Pink gold, diamond-set
- Case size
- 40mm
- Movement
- Automatic
- Calibre
- 978
- Market value band
- $6k – $45k
Q1682401 is a Jaeger-LeCoultre Master Ultra Thin Tourbillon reference.
The case is 40mm pink gold, diamond-set.
It runs the 978, an automatic movement.
Re-verified 2026-08-24, unchanged (still OUT OF COLLECTION). Round 40 mm case; tourbillon at 6 o'clock. Calibre 978 -- previously a third-party-only claim, now directly confirmed on the official jaeger-lecoultre.com movement spec panel.
Before you ask.
What movement does the Jaeger-LeCoultre Q1682401 use?
The Jaeger-LeCoultre Q1682401 runs the 978, an automatic movement.
How do I check a Jaeger-LeCoultre Q1682401 with Watch Safe?
Look up the watch's serial number in the Watch Safe registry to see whether a record exists or a theft flag is attached. A registry search identifies records for a specific serial; it does not authenticate the watch. Authentication is performed in person by an independent expert authenticator, and Watch Safe records and publishes the result.
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