Omega · LadyMatic

Strap for LadyMatic Co-Axial 34 Red Gold / Diamond / MOP / Diamond Bracelet

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
Reference425.65.34.20.55.005 (aka: 42565342055005)
FamilyLadyMatic
MovementOmega caliber 8521 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2016
CaseRed Gold

Spring bar

Spring bars for Omega

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

Straps for the LadyMatic 425.65.34.20.55.005 (aka: 42565342055005)

Selected for the 16 mm lug width

All 16 mm straps →

The LadyMatic 425.65.34.20.55.005 (aka: 42565342055005), seen from the bench

The Omega Ladymatic reference 425.65.34.20.55.005 is equipped with the automatic caliber 8521 with Co-Axial escapement and chronometer certification. The movement offers hours, minutes, seconds and date indication. The watch belongs to the Ladymatic women's collection of the Swiss brand.

Frequently asked questions

What is the lug width of the Omega LadyMatic 425.65.34.20.55.005?

The lug width of the LadyMatic 425.65.34.20.55.005 is 16mm. This specific width corresponds to the 34mm case proportions and allows fitting straps with type I attachment (standard spring bar) of 1.8mm diameter. You can verify the measurement by removing the original bracelet and positioning a digital caliper on the two lateral lugs of the case.

Which leather strap do you recommend for the LadyMatic 425.65.34.20.55.005?

For a watch in 18-carat rose gold with diamond bezel, natural alligator remains the most elegant choice: its geometric grain creates a texture contrast that enhances the case. Alternatively, Italian vegetable-tanned calf in burgundy or dark brown tones offers a more contemporary feel. For summer versatility, a silk jacquard or quality canvas NATO ensures practicality without aesthetic compromise.

How do you change the strap on the Omega LadyMatic 425.65.34.20.55.005?

Use a spring bar tool to remove the two lateral pins that secure the bracelet to the case lugs. Position the tool in the thin space between the lug and pin, press gently downward to release the internal spring, and slide the pin outward. Repeat on the other side. Insert the pins into the new strap ensuring the spring clicks fully into place.

Does the LadyMatic 425.65.34.20.55.005 accept aftermarket 16mm straps?

Yes, the LadyMatic accepts any strap with 16mm lug width and type I attachment (standard spring bar). Milano Straps offers an extensive collection of 16mm artisanal straps compatible with this model, customizable in leather, color, size, and stitching details. The Casati Milano atelier also creates bespoke straps with personal leather selection and 18-month warranty.

What is the average lifespan of a leather strap for this watch?

A quality leather strap (alligator, vegetable-tanned calf, shell cordovan) typically lasts 3-5 years with daily wear, or 5-7 years with occasional or seasonal use. Lifespan depends on frequency of wear, sun exposure, perspiration, humidity, and maintenance. Artisanal straps from Milano Straps are made with premium leathers and reinforced stitching, which significantly extends longevity compared to industrial products.

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