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

The 425.68.34.20.55.003 model features a 16mm lug width. This measurement is standard for this reference and ensures a proportionate attachment to the 34mm case. To verify the compatibility of an aftermarket strap, always measure the lug width with a digital caliper between the two lateral lugs of the case.

For the LadyMatic 425.68.34.20.55.003, black alligator straps (for maximum formality), vegetable-tanned calf leather (for warmth and natural patina), or shell cordovan (for marked artisanal character) are ideal. The choice depends on the occasion: sophisticated in black, versatile in dark brown, contemporary in grey-anthracite. For sporty contexts, waxed canvas NATO straps offer practicality without compromising the watch's DNA.

The strap on the Omega LadyMatic 425.68.34.20.55.003 is replaced using a dedicated tool (spring bar tool) that allows you to release the two metal lugs anchoring the strap to the case. Insert the thin tip of the spring bar tool into the slot beneath the lug, gently lever to extract the lug, then remove the strap. Repeat on the other side. Inserting the new strap follows the reverse path. If you are inexperienced, contact Casati Milano atelier for personalized support.

For a 34mm case like the 425.68.34.20.55.003, the total strap length varies between 190mm and 210mm depending on wrist size. Ideally, the short side (the part fastened to the wrist) should measure 65–75mm, while the long side (the part extending outward) should reach 115–130mm. Casati Milano atelier personalizes each strap based on measurements provided via WhatsApp.

An artisanal alligator or quality calf leather strap offers an average lifespan of 18–24 months with moderate daily wear. Factors influencing longevity are direct sun exposure (degrades the finish), frequent water contact (weakens the leather), and the type of buckle used. A stainless steel deployant clasp ensures more uniform load distribution compared to a traditional buckle, extending service life. Casati Milano atelier provides an 18-month warranty on custom-made straps.