Omega · LadyMatic

Strap for LadyMatic Co-Axial 34 Yellow Gold Diamond / Diamond Flower

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
Reference425.67.34.20.55.005 (aka: 42567342055005)
FamilyLadyMatic
MovementOmega caliber 8421 hours, minutes, seconds | chronometer, co-Axial escapement
Year2013
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 425.67.34.20.55.005 (aka: 42567342055005)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The LadyMatic 425.67.34.20.55.005 (aka: 42567342055005), seen from the bench

The Omega Ladymatic reference 425.67.34.20.55.005 houses the automatic Calibre 8421 with co-axial escapement and chronometer certification. The movement offers indication of hours, minutes and seconds with the co-axial technology developed by Omega. The Ladymatic collection represents the feminine version of the brand's automatic watches.

Frequently asked questions

What is the exact lug width of the Omega LadyMatic 425.67.34.20.55.005?

The lug width of the Omega LadyMatic 425.67.34.20.55.005 is 20mm. This is the nominal dimension that defines the internal space between the strap spring bars. Any strap purchased must respect this exact measurement to ensure proper insertion without play or forcing.

Which strap material is recommended for the LadyMatic in yellow gold?

Alligator represents the most natural choice for the LadyMatic in yellow gold, as its regular texture creates harmony with the precious case. Shell cordovan and vegetable-tanned calf leather are also excellent: shell cordovan develops an extraordinary patina over time, while polished calf amplifies the luminosity of gold. The choice depends on the intended use and personal color preferences.

How do I change the strap on this Omega model?

The Omega LadyMatic 425.67.34.20.55.005 requires the removal of spring bars using a specific tool (pin remover). It is advisable to place the watch on a protective base and, with precise movements, extract the bars from the back outward. An experienced craftsman completes this operation in a few minutes, minimizing the risk of scratching the precious metal case.

Is the strap purchased from milanostraps.it compatible with my Omega LadyMatic 425.67.34.20.55.005?

Yes, provided that the selected strap is 20mm, the correct lug width for this model. On milanostraps.it, all straps in the 20mm collection are compatible. If you desire an even more personalized solution, the Casati Milano atelier can create a bespoke strap, consulting you on leather, color, stitching thread and closure options.

How long does a leather strap last on a daily-wear watch?

Durability depends on the intensity of use, the material, and care. Quality artisanal alligator or shell cordovan typically lasts 3-5 years with moderate daily wear, developing a fascinating patina. Continuous exposure to water, sweat, and humidity accelerates wear. Casati Milano straps include an 18-month warranty and can be regenerated through professional restoration to significantly extend their lifespan.

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