Omega · LadyMatic
Strap for LadyMatic Co-Axial 34 Stainless Steel / Black / Bracelet
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the LadyMatic 425.30.34.20.01.001 (aka: 42530342001001)
Selected for the 16 mm lug width
The LadyMatic 425.30.34.20.01.001 (aka: 42530342001001), seen from the bench
Frequently asked questions
What is the lug width of the Omega LadyMatic 425.30.34.20.01.001?
The lug width is 16mm. This measurement refers to the space between the spring bar attachments where the replacement strap is inserted. Do not confuse it with the case diameter (34mm) or the width of the integrated bracelet: the 16mm is the perpendicular distance you would measure with a caliper between the lateral attachment rings.
Which strap pairs best with the LadyMatic 425.30.34.20.01.001?
For the sophisticated and proportioned character of this model, we recommend cognac brown alligator, dark blue or black calf leather, or an anthracite grey NATO strap. The choice depends on usage: alligator for formal occasions, calf for daily versatility, NATO for sporty practicality. The Casati Milano atelier guides the selection based on your wrist and wardrobe.
How do you change the strap on an Omega LadyMatic 425.30.34.20.01.001?
The Omega LadyMatic is fitted with spring bars at the lug attachments. Obtain a spring bar removal tool (strap removal tool), position it perpendicularly under each pin, gently push upward to release the pin and remove the original bracelet. Insert the new 16mm strap by aligning the lateral holes with the pins, then press downward until they click into place. Verify that both sides are properly secured before wearing the watch.
Are there aftermarket straps compatible with this model?
Yes, absolutely. Milanostraps.it offers a complete collection of <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-16mm">16mm straps</a> in alligator, vegetable-tanned calf, shell cordovan and technical fabrics, all compatible with the spring bar system of the LadyMatic 425.30.34.20.01.001. Straps are customizable in length, initials and stitching thread. For bespoke needs with premium leathers, Casati Milano creates made-to-order straps with direct consultation via WhatsApp.
How long does a leather strap last on an Omega LadyMatic?
Durability depends on leather quality, frequency of use and care. Genuine alligator or artisanal calf leather resists 3-4 years with regular use (5-7 days weekly), developing a fascinating natural patina. Leather is not 'disposable': it simply ages. Protect it from excessive perspiration, prolonged direct sunlight and stagnant water. Casati Milano straps include an 18-month warranty and are renewable through reconditioning at the 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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

