Omega · Speedmaster (Non-Moonwatch)
Strap for Speedmaster Mark II Co-Axial Chronograph Stainless Steel / Sedna Gold / Grey / Bracelet
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Recommended spring bar
Straps for the Speedmaster (Non-Moonwatch) 327.20.43.50.01.001 (aka: 32720435001001)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap€80
The Speedmaster (Non-Moonwatch) 327.20.43.50.01.001 (aka: 32720435001001), seen from the bench
Frequently asked questions
What is the lug width of the Omega Speedmaster 327.20.43.50.01.001?
The lug width is 20 millimetres. This measurement determines the internal space of the strap keeper and must be measured precisely using a digital calliper to avoid improper installation.
What is the best strap for the 327.20.43.50.01.001?
For the two-tone Sedna Gold and steel version, a black alligator or bordeaux Shell Cordovan leather strap creates the maximum aesthetic balance. Alligator offers softness and defined grain, while Shell Cordovan develops an extraordinary patina over time. For a sporty approach, black vegetable-tanned calf or stone grey represent versatile choices.
How do you change the strap on this Omega?
The Omega 327.20.43.50.01.001 features fixed lugs. Remove the strap by gently sliding the lateral pins outward using a springbar tool. Align the holes of the new strap's lugs and reinsert the pins with uniform pressure until the locking click is heard.
Is an aftermarket strap compatible with the 327.20.43.50.01.001?
Yes, provided the strap is specifically constructed for 20 millimetre lugs with internal keepers of 20mm. Custom-made straps from specialised artisans such as Casati Milano guarantee full compatibility and customisation of material, colour and stitching thread.
How long does a leather strap last on an Omega Speedmaster?
An artisanal alligator or Shell Cordovan leather strap lasts 3-5 years with daily use and appropriate maintenance (occasional cleaning, quick drying after water contact). Longevity depends on sun exposure, humidity and tanning quality. The Casati Milano warranty is 18 months.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only