OP IV
hours, minutes, seconds, date, chronograph
30-minutes totalisator at “3”, 12-hours totalisator at “6”, 60-secondss totalisator at “9”, COSC Certified
| Label | Value |
|---|---|
| Model | OP IV |
| Winding | Automatic |
| Basis | El Primero 40.0 |
| Producer | Zenith |
| Introduction | 1999 |
| Dimension | 29,89 mm (13 1/4''') |
| Frequency | 36.000 vph (5 Hz) |
| Power Reserve | 50 h |
| Jewels | 31 |
| Height | 6,50 mm |