Omega Speedmaster First Omega in Space
Most Omega Speedmaster First Omega in Space references take a 19 mm watch strap: 7 of 8.
Omega Speedmaster First Omega in Space lug width by case size
8 references measured. Updated 2026-10-29.
| Case | Lug width | References | Watch strap attachment | For example |
|---|---|---|---|---|
| 40 mm | 19 mm · 20 mm on 1 | 8 | — | 310.30.40.50.06.001, 310.32.40.50.06.001, 310.32.40.50.06.002 |
References that take a different watch strap
- 311.63.40.30.02.001: 20 mm, not the 19 mm of most 40 mm cases
Every Omega Speedmaster First Omega in Space reference
- Speedmaster First Omega in Space Master Chronometer Stainless Steel / Blue-Grey / Bracelet310.30.40.50.06.001
19 mm - Speedmaster First Omega in Space Master Chronometer Stainless Steel / Blue-Grey310.32.40.50.06.001
19 mm - Speedmaster First Omega in Space Master Chronometer Stainless Steel / Blue-Grey310.32.40.50.06.002
19 mm - Speedmaster First Omega in Space311.32.40.30.01.001
19 mm - Speedmaster First Omega in Space The Met Edition311.32.40.30.01.002
19 mm - Speedmaster First Omega in Space Hodinkee 10th Anniversary311.32.40.30.06.001
19 mm - Speedmaster First Omega in Space Sedna Gold311.63.40.30.02.001
20 mm - Speedmaster First Omega in Space Hodinkee 10th Anniversary883.63.40.30.06.001
19 mm
Other Omega families
Inside each one the lug width often changes: it is the reference that decides.
- Constellation 945
- De Ville 754
- Aqua Terra 584
- Seamaster Diver 300M 272
- Seamaster Planet Ocean 242
- Speedmaster (Non-Moonwatch) 196
- Speedmaster Moonwatch 163
- LadyMatic 103
- Trésor 99
- Museum Collection 64
- Speedmaster Broad Arrow 45
- Speedmaster Reduced 45
All Omega families → · Why the size changes inside a family →