Omega Speedmaster First Omega in Space 311.63.40.30.02.001

The Omega Speedmaster First Omega in Space 311.63.40.30.02.001 takes a 20 mm watch band.

Omega Speedmaster First Omega in Space 311.63.40.30.02.001, 20 mm lug width

Omega · Speedmaster First Omega in Space

Lug width
20 mm
Case diameter
40 mm
Reference
311.63.40.30.02.001
Family
Speedmaster First Omega in Space
Case material
Sedna Gold
Model
Speedmaster First Omega in Space Sedna Gold
Year
2015/3

Will a strap close on your wrist?

Set for this watch: 40 mm of case and 20 mm between the lugs. Add your wrist and see where a standard strap would close.

mm

Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.

75 mm115 mm

Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.

Why ready-made straps come in one length →

Sizing notes

  • 20 mm is the gap between the lugs, so a 20 mm band goes in without adapters. Whether it sits flush against a 40 mm case depends on how that case is shaped.
  • Inside the Speedmaster First Omega in Space family the lug width is not one number: it runs 19, 20 mm. This reference is the 20 mm one, so a band bought for another Speedmaster First Omega in Space may not fit it. Why the size changes inside a family →
  • 20 mm is one of the common sizes: 15,081 of the 41,485 watches measured take it, which is why it is the width most bands are cut in. Every watch that takes 20 mm →