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CK2915 vs 3570.50
Differences are highlighted. Rows where both references share a value are dimmed.
| Specification | ||
|---|---|---|
| Nickname | Broad Arrow | — |
| Production | 1957–1959 | 1996–2014 |
| Era | First Speedmaster | Caliber 1861 |
| Status | discontinued | discontinued |
| Case diameter | 39mm | 42mm |
| Case material | Stainless steel | Stainless steel |
| Bezel | Tachymeter | Tachymeter |
| Bezel material | Steel (later aluminium) | Black aluminium |
| Crystal | Acrylic (Hesalite) | Acrylic (Hesalite) |
| Caseback type | Screw-down solid | — |
| Water resistance | 60m | 50m |
| Dial | Black | Black |
| Hour markers | — | Applied Omega logo, painted indices |
| Hands | Broad arrow | Straight (baton) |
| Lume | Radium then tritium | Super-LumiNova |
| Lume type | Radium | Super-LumiNova |
| Movement | Manual chronograph | Manual chronograph |
| Caliber | 321 | 1861 |
| Manufacturer | Omega (Lemania base) | Omega (Lemania base) |
| Winding | manual | manual |
| Power reserve | — | ~48 hours |
| Frequency | 18,000 vph | 21,600 vph |
| Jewels | — | 18 |
| Complications | Chronograph, tachymeter | Chronograph, tachymeter |
| Functions | Chronograph, tachymeter | Chronograph, tachymeter |
| Aliases | — | 3570.50.00 |
Compare CK2915 with another generation