Omega · LadyMatic

Strap for LadyMatic Co-Axial 34 Yellow Gold / MOP

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter34 mm
Reference425.63.34.20.55.002 (aka: 42563342055002)
FamilyLadyMatic
MovementOmega caliber 8521 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2016
CaseYellow Gold

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the LadyMatic 425.63.34.20.55.002 (aka: 42563342055002)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The LadyMatic 425.63.34.20.55.002 (aka: 42563342055002), seen from the bench

The Omega LadyMatic Co-Axial 34 Yellow Gold (ref. 425.63.34.20.55.002) features a 34mm yellow gold case with a concentric wave-pattern dial and white gold applied indices. Powered by the automatic Caliber 8521 with Co-Axial escapement and METAS chronometer certification, it delivers precise timekeeping and extended service life. The 20mm lug width accommodates leather straps proportioned to the elegant case design. Launched in 1955 and reinterpreted in 2010, the LadyMatic represents refined proportions for women's horology.

Frequently asked questions

What is the lug width of the Omega LadyMatic 425.63.34.20.55.002?

The lug width of the LadyMatic 425.63.34.20.55.002 is 20mm. This measurement represents the net distance between the two lug terminals, measured internally. Always verify this measurement personally on your watch before ordering a strap, as measurement errors are the most common cause of incompatibility.

Which strap pairs best with the LadyMatic in yellow gold?

To enhance the yellow gold of the LadyMatic 425.63.34.20.55.002, we recommend alligator in cognac or hazel tones for a warm-on-warm effect, or black calf for elegant contrast on formal occasions. A brown shell cordovan develops beautifully in parallel with the natural patina of the gold, creating a coordinated effect over time.

How do you change the strap on the LadyMatic 425.63.34.20.55.002?

Strap changing is accomplished using a spring bar tool that allows you to free the lugs from the metal terminals. Position the tool in the two small grooves on the sides of the lug, apply gentle pressure to compress the internal spring, and slide the lug downward. Reverse the process to install the new strap. If you lack experience, consult a professional watchmaker.

Are there aftermarket straps compatible with the LadyMatic 425.63.34.20.55.002?

Yes, all straps with 20mm lug width are compatible with the LadyMatic 425.63.34.20.55.002. Milano Straps offers a broad range of artisanal leather straps in superior quality, with customization options in sizes, initials, and stitching thread color.

How long does a leather strap last on a watch worn daily?

The lifespan of a leather strap depends on the quality of the leather, frequency of use, and care. Under daily wear conditions with exposure to moisture and perspiration, a quality alligator or cordovan strap lasts 3–5 years. Milano Straps straps are guaranteed for 18 months and crafted from durable leathers; regular maintenance (drying, protection from prolonged sun exposure) significantly extends useful life.

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