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311.30.42.30.01.005 vs CK2915
Differences are highlighted. Rows where both references share a value are dimmed.
| Specification | ||
|---|---|---|
| Nickname | — | Broad Arrow |
| Production | 2014–2021 | 1957–1959 |
| Era | Caliber 1861 (final) | First Speedmaster |
| Status | discontinued | discontinued |
| Case diameter | 42mm | 39mm |
| Case material | Stainless steel | Stainless steel |
| Bezel | Tachymeter | Tachymeter |
| Bezel material | Black aluminium | Steel (later aluminium) |
| Crystal | Acrylic (Hesalite) | Acrylic (Hesalite) |
| Caseback type | — | Screw-down solid |
| Water resistance | 50m | 60m |
| Dial | Black | Black |
| Hands | Straight (baton) | Broad arrow |
| Lume | Super-LumiNova | Radium then tritium |
| Lume type | Super-LumiNova | Radium |
| Movement | Manual chronograph | Manual chronograph |
| Caliber | 1861 | 321 |
| Manufacturer | Omega (Lemania base) | Omega (Lemania base) |
| Winding | manual | manual |
| Frequency | — | 18,000 vph |
| Complications | Chronograph, tachymeter | Chronograph, tachymeter |
| Functions | — | Chronograph, tachymeter |
| Bracelet | Steel | — |
Compare 311.30.42.30.01.005 with another generation