Universal Geneve 381, 383 (12-13'''), Winding stem, DCN: 1312c
- DCN no: 1312c
- Thread: 120
- For chronograph: Compax, Tri-Compax (12 - 13''').
- Fits cal: 381, 383
- A: = 69
- B: = 90
- C: = 130
- D: = 120
- F: = 364
Versions: 12''' (281), Flat hairspring (381), 12,25''' (282), 13''' (283), Flat hairspring (383), 13,5''' (284).
- Uni-Compax: 60 s, 30/45 min counter.
- Compax: 60 s, 30 min, 12 h counter, H=6,35 mm.
- Tri-Compax: 60 s, 30 min, 12 h counter, date, month, moon phase, H=7,15 mm.
Versions: 14''' (285), Flat hairspring (385), 15,75''' (292).
- Uni-Compax: 60 s, 30/45 min counter.
- Compax: 60 s, 30 min, 12 h counter, H=6,05 mm.
Versions: 15''' (287), Flat hairspring (387).
- Uni-Compax: 60 s 30/45 min counter.
- Compax: 60 s, 30 min, 12 h counter, H=6,05 mm.
- Aero-Compax: 60 s, 30 min, 12 h counter, dual time: 12 h.