Speedmaster Moonwatch vs Seamaster Diver 300M
Both have a 42 mm case, the Speedmaster Moonwatch is thinner (13.18 mm against 13.61 mm) and the Seamaster Diver 300M is more water resistant (300 m against 50 m). The movements differ. Sizes are typical values across each model's references.
- OmegaSpeedmaster Professional Moonwatch 3861 310.60.42.50
- OmegaSeamaster Diver 300M Master Co-Axial 42 210.30.42.20
| Specification | Speedmaster Moonwatch | Seamaster Diver 300M |
|---|---|---|
| Family | Omega Speedmaster Moonwatch | Omega Seamaster Diver 300M |
| References recorded | 7 | 12 |
| Case diameter | 42 mm | 42 mm |
| Case thickness | 13.18 mm to 13.63 mm | 13.49 mm to 14.26 mm |
| Case material | Rose gold, Yellow gold, White gold | Stainless steel |
| Water resistance | 50 m | 300 m |
| Crystal | Sapphire | Sapphire |
| Movement | Omega calibre 3861, Omega calibre 3861 msg | Omega calibre 8800, Omega calibre 8806 |
| Functions | Not yet recorded | Not yet recorded |
| Dial colours | Black, Silver, Green, Yellow | Black, Blue, White, Grey, Green |
| Introduced | Not yet recorded | Not yet recorded |
| Limited editions | 0 | 0 |
Key differences
- Both models have a typical case diameter of 42 mm.
- The Omega Speedmaster Professional Moonwatch 3861 310.60.42.50 is thinner, at a typical 13.18 mm against 13.61 mm for the Omega Seamaster Diver 300M Master Co-Axial 42 210.30.42.20.
- The Omega Seamaster Diver 300M Master Co-Axial 42 210.30.42.20 is more water resistant, at a typical 300 m against 50 m for the Omega Speedmaster Professional Moonwatch 3861 310.60.42.50.
- The Omega Speedmaster Professional Moonwatch 3861 310.60.42.50 uses 2 different movements across its references, and the Omega Seamaster Diver 300M Master Co-Axial 42 210.30.42.20 uses 2 different movements across its references.
Speedmaster Moonwatch vs Seamaster Diver 300M questions
Which is larger, the Speedmaster Moonwatch or the Seamaster Diver 300M?
Both models have a typical case diameter of 42 mm.
Which is thinner, the Speedmaster Moonwatch or the Seamaster Diver 300M?
The Omega Speedmaster Professional Moonwatch 3861 310.60.42.50 is thinner, at a typical 13.18 mm against 13.61 mm for the Omega Seamaster Diver 300M Master Co-Axial 42 210.30.42.20.
Which is more water resistant, the Speedmaster Moonwatch or the Seamaster Diver 300M?
The Omega Seamaster Diver 300M Master Co-Axial 42 210.30.42.20 is more water resistant, at a typical 300 m against 50 m for the Omega Speedmaster Professional Moonwatch 3861 310.60.42.50.
Which movement does each watch use?
The Omega Speedmaster Professional Moonwatch 3861 310.60.42.50 uses 2 different movements across its references, and the Omega Seamaster Diver 300M Master Co-Axial 42 210.30.42.20 uses 2 different movements across its references.