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Benrus BB4
Ligne: 10.5'''
Jewels: 15
Power Reserve: 41 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1950
Diameter: 23.4 mm
Height: 3.6 mm
Hands: 1.22 x 0.66 / 0.16 mm
The Benrus BB4 is a mechanical watch movement incorporating a Breguet hairspring. Technical distinctions between the Gruen 416 and 417 are currently unclear. Notably, the Benrus BB4 movement offers manual winding functionality and includes a sub-second function. It was predominantly utilized during the approximate time period of 1950.
The Benrus BB4 features the following functions:
- Manual Winding
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 3590 | Ordinary/None | Buy staff |
| 3848 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.110 x 290 x 9.5 mm | Manual | Buy mainspring | |
| 1.50 x 0.110 x 300 x 9.0 mm | GR4149 | Manual | Buy mainspring |
| 1.50 x 0.110 x 280 x 8.5 mm | GR4148 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
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