Buren 20" Neg (=Buren 820)
Mechanical
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Notes
open face calibre
Breguet hairspring
negative stem mechanism for US market
Movements with same layouts for base plate and bridges were made with varying heights and stem mecanisms, one even with bigger diameter for US cases.
They are either signed with diameter in lignes and height in 1/12 lignes or with a newer 3-digits designation.
Dimensions
| Width | — |
|---|---|
| Height | 7.8 mm |
| Stem height | — |
| Hands (H × M × S) | 1.9 × 1.2 × 0.28 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | — |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | — |
| Thickness | — |
| Length | — |
| Barrel diameter | — |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Buren |
| Year | — |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions