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CK2915 vs 310.30.42.50.01.002
Differences are highlighted. Rows where both references share a value are dimmed.
| Specification | ||
|---|---|---|
| Nickname | Broad Arrow | — |
| Production | 1957–1959 | 2021–present |
| Era | First Speedmaster | Caliber 3861 (Hesalite) |
| Status | discontinued | current |
| MSRP | — | $7,000 (2023, Hesalite) |
| Case diameter | 39mm | 42mm |
| Case material | Stainless steel | Stainless steel |
| Bezel | Tachymeter | Tachymeter |
| Bezel material | Steel (later aluminium) | Black aluminium (anodised) |
| Crystal | Acrylic (Hesalite) | Acrylic (Hesalite), solid caseback |
| Caseback type | Screw-down solid | Screw-down solid |
| Water resistance | 60m | 50m |
| Dial | Black | Black (step dial) |
| Hands | Broad arrow | Straight (baton) |
| Lume | Radium then tritium | Super-LumiNova |
| Lume type | Radium | Super-LumiNova |
| Movement | Manual chronograph | Manual chronograph |
| Caliber | 321 | 3861 |
| Manufacturer | Omega (Lemania base) | Omega |
| Winding | manual | manual |
| Power reserve | — | ~50 hours |
| Frequency | 18,000 vph | — |
| Complications | Chronograph, tachymeter | Chronograph, tachymeter |
| Functions | Chronograph, tachymeter | — |
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