Omega · LadyMatic

Strap for LadyMatic Co-Axial 34 Stainless Steel / Yellow Gold / MOP / Bracelet

Takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width17 mm
Case diameter34 mm
Reference425.20.34.20.55.002 (aka: 42520342055002)
FamilyLadyMatic
MovementOmega caliber 8520 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2013
CaseMother of Pearl | Yellow Gold, Stainless Steel

Spring bar

Spring bars for Omega

The right category for this model · choose the 17 mm size

The LadyMatic 425.20.34.20.55.002 (aka: 42520342055002), seen from the bench

The Omega LadyMatic 425.20.34.20.55.002 is a 34mm stainless steel and yellow gold watch featuring a mother-of-pearl dial and Co-Axial automatic movement. Powered by the Omega 8520 caliber running at 4 Hz, it carries METAS Chronometer certification. The case measures 11.4mm in height with 30m water resistance and sapphire crystal. The lug width is 17mm, allowing compatibility with a wide selection of straps.

Frequently asked questions

What is the exact lug width of the Omega LadyMatic 425.20.34.20.55.002?

The lug width of the 425.20.34.20.55.002 model is 17mm. This measurement represents the distance between the two lateral case lugs where the strap attaches. It is essential to measure this precisely using calipers to ensure strap compatibility, avoiding unsightly gaps or insertion difficulties.

Which strap material is best suited to the mother-of-pearl dial of the LadyMatic?

Alligator in neutral tones (black, medium brown, pearl grey) is the most formal and harmonious choice. Vegetable-tanned calf offers a more articulated texture and develops a fascinating patina over time. For more casual daytime contexts, reinforced canvas or rubber maintains the elegant design. Shell cordovan is ideal for those who appreciate chromatic depth and lasting luxury.

How do you change the strap on the Omega LadyMatic 425.20.34.20.55.002?

Changing the strap on the 425.20.34.20.55.002 is a simple but delicate operation. Use a spring bar tool to push the small spring bars that hold the strap in the lugs. Position the watch on a soft surface, press the bar from one side until the strap loosens, then repeat on the other side. Insert the new strap by aligning the holes with the bars and push until they click into position.

Can I use a generic 17mm aftermarket strap on this Omega?

Technically yes, since the lug width is 17mm, but it is strongly recommended to choose straps specifically calibrated for luxury watches. Milano Straps are custom-made with superior quality leathers and refined finishing, ensuring a secure fit and aesthetics consistent with the sophistication of the LadyMatic. Generic aftermarket straps often feature unstable fastening or poor quality leather.

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

A high-quality natural leather strap, such as those from Milano Straps, has an average lifespan of 3-5 years with regular use and proper maintenance. Factors such as exposure to sweat, sunlight, and humidity variations affect longevity. To extend its life, it is advisable not to wear the watch during water activities and to clean the strap periodically. Milano Straps offers an 18-month warranty on custom straps from the Casati Milano atelier.

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