Omega · LadyMatic

Strap for LadyMatic Co-Axial 34 Yellow Gold / Black

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width16 mm
Case diameter34 mm
Reference425.63.34.20.51.002 (aka: 42563342051002)
FamilyLadyMatic
MovementOmega caliber 8521 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2016
CaseYellow Gold

Spring bar

Spring bars for Omega

The right category for this model · choose the 16 mm size

Straps for the LadyMatic 425.63.34.20.51.002 (aka: 42563342051002)

Selected for the 16 mm lug width

All 16 mm straps →

The LadyMatic 425.63.34.20.51.002 (aka: 42563342051002), seen from the bench

The Omega LadyMatic Co-Axial 34 Yellow Gold model 425.63.34.20.51.002 features a 34mm yellow gold case with a black dial and integrated yellow gold bracelet. It houses the Omega caliber 8521 automatic movement equipped with Co-Axial escapement, water-resistant to 30 metres. The lug width is 16mm. This contemporary reinterpretation of the 1950s LadyMatic collection combines precision chronometry with refined construction.

Frequently asked questions

What is the lug width of the Omega LadyMatic 425.63.34.20.51.002?

The lug width of this model is 16 millimetres. This width is standard for the 34mm case and ensures optimal proportions between the strap and the case diameter. You can verify it by measuring with a calliper the slot where the original strap is inserted into the case.

Which strap do you recommend for the LadyMatic 425.63.34.20.51.002 in yellow gold?

For this reference in 18-carat yellow gold, we recommend an alligator in cognac brown or black tones, which enhances the jewel-like nature without competing with the precious metal. Alternatively, vegetable-tanned calf leather develops a magnificently aged patina, ideal for those who appreciate aesthetic evolution over time.

How do you change the strap on the Omega LadyMatic 425.63.34.20.51.002?

The strap is replaced via the lugs welded to the case. Using a dedicated removal lever (spring bar tool) and acting with caution to avoid scratching the gold, the pins that hold the strap in place are extracted. It is advisable to consult a professional if you lack experience, given the preciousness of the case.

Which aftermarket straps are compatible with the 16mm lug width?

All straps with 16mm lug width are compatible with the 425.63.34.20.51.002. Milano Straps' collection offers options in alligator, calf, shell cordovan, NATO and rubber, customizable in sizes, initials and choice of stitching thread.

How long does a leather strap last on a watch like the Omega LadyMatic?

Durability depends on the material and usage. Premium quality alligator lasts 4-6 years in daily wear. Vegetable-tanned calf tends to last longer (5-8 years) due to greater fibre robustness. FKM rubber guarantees 3-5 years. Factors such as perspiration, sun exposure and frequency of use significantly affect longevity.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only