Master Ultra Thin Power Reserve
Q1378420
In production—dress
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- 39 mm · Stainless steel
- Thickness
- 9.9 mm
- Water
- 50 m
- Calibre
- 938 · 43 h
- Dial
- Silvered grey
- Bracelet
- Leather
General
- Model name
- Master Ultra Thin Power Reserve
- Collection
- Master Ultra Thin
- Status
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Description
The Jaeger-LeCoultre Master Ultra Thin Power Reserve Q1378420 is in production. It has a 39 mm stainless steel case, 9.9 mm thick and water-resistant to 50 m. It has a silver sunburst dial with baton indices. It uses the automatic calibre 938, with a 43-hour power reserve. Its functions include date and power reserve indicator. It comes on a leather strap with a butterfly clasp.
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From other collections and brands, ranked by recorded size, case metal, dial, bezel, water resistance, movement, bracelet, lume and power reserve.
Provenance and history
| When (UTC) | Field | Change | By |
|---|---|---|---|
| 23 Oct 2026 15:45 | caliber_id | — → 557 | Jaeger-LeCoultre |
| 23 Oct 2026 15:45 | water_resistance_m | — → 50 | Jaeger-LeCoultre |
| 23 Oct 2026 15:45 | strap_color | — → Black | Jaeger-LeCoultre |
| 23 Oct 2026 15:45 | production_status | unknown → in_production | Jaeger-LeCoultre |
