Zenith centers on the high-frequency El Primero. Chronomaster Sport at 41mm × 13.6mm reads the 1/10-second on the bezel; Chronomaster Original 38 reissues the 1969 case. The Defy Skyline at 41mm and 36mm carries the integrated-bracelet line.
| Family | Model | Reference | Diameter | Thickness | Lug-to-Lug | Lug Width | Bracelet Taper | Water | Movement |
|---|---|---|---|---|---|---|---|---|---|
| Defy | Defy Skyline 41 | 03.9300 | 41 mm | 10.6 mm | 46.0 mm | integrated | 24 → 18 mm | 100 m | El Primero 3620 |
| Defy | Defy Skyline 36 | 03.9400 | 36 mm | 10.0 mm | 42.0 mm | integrated | 21 → 16 mm | 100 m | Elite 670 SK |
| Defy | Defy Classic | 03.9000 | 41 mm | 10.75 mm | 46.0 mm | integrated | 24 → 18 mm | 100 m | Elite 670 SK |
| Defy | Defy Extreme | 95.9100 | 45 mm | 15.4 mm | 53.0 mm | integrated | 27 → 22 mm | 200 m | El Primero 9004 |
| Chronomaster | Chronomaster Sport | 03.3100 | 41 mm | 13.6 mm | 47.0 mm | 21 mm | 21 → 18 mm | 100 m | El Primero 3600 |
| Chronomaster | Chronomaster Original | 03.3200 | 38 mm | 13.6 mm | 45.0 mm | 19 mm | 19 → 16 mm | 50 m | El Primero 3600 |
| Chronomaster | Chronomaster Open | 03.3300 | 39.5 mm | 13.6 mm | 46.0 mm | 20 mm | 20 → 18 mm | 50 m | El Primero 3604 |
| Chronomaster | Chronomaster Triple Calendar | 03.3400 | 41 mm | 14.95 mm | 48.0 mm | 20 mm | 20 → 18 mm (leather) | 50 m | El Primero 3610 |
| Chronomaster | Chronomaster Revival A384 | 03.A384 | 37 mm | 12.6 mm | 44.0 mm | 19 mm | 19 → 16 mm | 50 m | El Primero 400 |
| Chronomaster | Chronomaster Revival A386 | 03.A386 | 38 mm | 12.6 mm | 45.0 mm | 19 mm | 19 → 16 mm | 50 m | El Primero 400 |
| Pilot | Pilot Big Date Flyback | 29.2430 | 42.5 mm | 14.45 mm | 50.0 mm | 21 mm | 21 → 18 mm | 100 m | El Primero 3652 |
| Pilot | Pilot Cronómetro Tipo CP-2 | 29.2240 | 43 mm | 14.55 mm | 50.5 mm | 22 mm | 22 → 20 mm (leather) | 100 m | El Primero 4069 |
| Elite | Elite Classic | 03.2270 | 40 mm | 8.5 mm | 46.0 mm | 20 mm | 20 → 16 mm (leather) | 50 m | Elite 670 |
Specs from the manufacturer's published technical data. Lug-to-lug values reflect commonly-cited caliper measurements where the manufacturer does not publish them and may vary by ±0.5 mm. References cover the principal current production variants per family - bezel, dial, and metal-option references usually share case dimensions.
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