Omega · X-33 / Z-33
Strap for Speedmaster X-33 Titanium / Bracelet / Pilot
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the X-33 / Z-33 3291.52.00 (aka: 32915200)
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 X-33 / Z-33 3291.52.00 (aka: 32915200), seen from the bench
Frequently asked questions
What is the lug width of the Omega X-33 / Z-33 3291.52.00?
The lug width is exactly 20 millimeters. This measurement is characteristic of the model and not interchangeable with the 22mm of other Seamaster models or the 18mm of Omega dress models. To verify it, use a digital caliper positioned perpendicularly between the lug attachment holes.
What strap is recommended for the Omega X-33 / Z-33?
The best strap depends on use: authentic alligator for tactical operations (enhances the avinic profile), vegetable-tanned calf for daily elegance (develops a fascinating grayish patina), burgundy shell cordovan for modern color statements. All require a precise 20mm lug width.
How do I change the strap on my Omega X-33 / Z-33 3291.52.00?
Position the watch face down on a soft cloth. Locate the lug attachment holes (one per side). Use a dedicated tool (spring bar tool) to release the internal spring of the pin present in each lug, extracting it gently upward. Remove the old strap, insert the new one aligning it with the holes, then reinsert the pins until the locking click.
Can I use an aftermarket 20mm strap on an original Omega watch?
Yes, provided the strap is constructed to 20mm lug specifications and the spring bar has a standard diameter of 1.5mm. Quality handcrafted straps maintain complete compatibility with original Omega lugs. We recommend verifying tolerances with the supplier before purchase, especially for thin leathers such as alligator or shell cordovan.
How long does a leather strap last on an Omega X-33?
A quality leather strap (alligator, calf or shell cordovan) with vegetable or mineral tanning lasts an average of 3-5 years if worn daily, up to 7-10 years with rotation with other straps. Exposure to intense humidity (pressurized environments, water operations) reduces durability. The Casati Milano warranty covers 18 months against manufacturing defects, regardless of natural wear.
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

