Zenith Chronomaster
Most Zenith Chronomaster references take a 20 mm watch strap: 2 of 3.
Zenith Chronomaster lug width by case size
3 references measured. Updated 2026-10-29.
| Case | Lug width | References | Watch strap attachment | For example |
|---|---|---|---|---|
| 42 mm | 20 mm · 18 mm on 1 | 3 | — | 03.20410.4061/07.C772, 03.20411.4061/07.C776 |
References that take a different watch strap
- 03.20417.4061/07.C772: 18 mm, not the 20 mm of most 42 mm cases
Other Zenith families
Inside each one the lug width often changes: it is the reference that decides.
- El Primero 170
- Defy 122
- Pilot 64
- Elite 63
- Chronomaster Sport 49
- Revival 46
- Defy Skyline 42
- Chronomaster Original 27
- Defy Extreme 27
- Academy 11
- Class 4
All Zenith families → · Why the size changes inside a family →