Omega · X-33 / Z-33
Strap for Omega X-33 / Z-33 325.90.43.79.01.001
The Spacemaster Z-33 Titanium / Black / 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 X-33 / Z-33 325.90.43.79.01.001
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★ 4.5 · 4€80
What I'm asked about the Omega X-33 / Z-33 325.90.43.79.01.001
What strap size does the Omega X-33 / Z-33 325.90.43.79.01.001 take?
The Omega X-33 / Z-33 325.90.43.79.01.001 needs 20 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.
Can the strap on the Omega X-33 / Z-33 325.90.43.79.01.001 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Omega X-33 / Z-33 325.90.43.79.01.001?
Yes, in 20 mm leather. On a 43 mm case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Omega X-33 / Z-33 325.90.43.79.01.001?
A 20 mm calf strap, for every day. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
The X-33 / Z-33 325.90.43.79.01.001, seen from the bench
Frequently asked questions
What is the best strap for the Speedmaster X-33 / Z-33?
It depends on your use. For an elegant-technical profile, we recommend dark brown vegetable-tanned alligator or grey-smoke calf leather. For maximum water resistance and resistance to weathering, a military NATO or FKM rubber are the most intelligent choice. The titanium case enhances colour contrasts, so dark brown or navy blue will create very striking visual dialogues.
Is there a reliable aftermarket strap for the 325.90.43.79.01.001?
Yes, the 20mm lug width is well served by the market. Brands such as Hirsch, Barenia, Tropic and artisan Italian manufacturers (such as Milano Straps) produce certified quality leather and rubber straps, compatible and often superior to original Omega straps in terms of aesthetic craftsmanship and customization.
How long does a leather strap last on a watch like this?
A high-quality alligator or calf leather strap, with regular maintenance (periodic cleaning, drying after water contact), lasts 2-4 years of daily use. Vegetable-tanned leather ages more visibly, developing a fascinating patina. Rubber or NATO straps last 3-5 years before requiring replacement due to material degradation.
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
The atelier's website: casatimilano.com