Patek Philippe · 30-255 family
30-255 PS
A thin hand-wound calibre with small seconds and two parallel barrels.
At a glance
- Type
- Hand-wound mechanical
- Display / complication
- Small seconds
- Architecture
- Twin parallel barrels, manual winding
- Timebase
- 28,800 vph / 4 Hz
- Power reserve
- Minimum 65 h
- Movement height
- 2.55 mm
- Jewels
- 27
Reference sources reviewed 7 November 2026. Published specifications, not independent measurements. Versions and complete-watch specifications can differ; fields without a verified figure are omitted or identified.
Find it in a watch
Patek Philippe Calatrava 6119
An example from the linked references. Check the exact model and production generation.
What distinguishes it
Look beyond the reference.
Its 31 mm diameter and 2.55 mm height illustrate how a broad, shallow movement can support a slim dress watch. Two parallel barrels are central to its construction.
For the enthusiast
Introduced for the Calatrava 6119 in 2021. Compare with the automatic 240 to explore two different solutions for a thin movement.