Omega · LadyMatic

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

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
Reference425.27.34.20.55.003 (aka: 42527342055003)
FamilyLadyMatic
MovementOmega caliber 8520 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2016
CaseMother of Pearl | Yellow Gold, Stainless Steel

Spring bar

Spring bars for Omega

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

Straps for the LadyMatic 425.27.34.20.55.003 (aka: 42527342055003)

Selected for the 16 mm lug width

All 16 mm straps →

The LadyMatic 425.27.34.20.55.003 (aka: 42527342055003), seen from the bench

The Omega LadyMatic Co-Axial 34 is a bicolor case combining 18K yellow gold and stainless steel, with mother-of-pearl dial and diamond setting. Featuring the Omega 8520 automatic movement with 60-hour power reserve and Co-Axial escapement, this 34.00 mm certified chronometer embodies technical reliability with classical elegance. Water-resistant to 30 meters, it accommodates a 16 mm strap width, maintaining harmonious proportions ideal for refined daily wear.

Frequently asked questions

What is the lug width of the Omega LadyMatic 425.27.34.20.55.003?

The lug width of the LadyMatic 425.27.34.20.55.003 is 16 millimetres. This measurement represents the distance between the two lugs of the case and is essential for purchasing a compatible strap. Measure with precision using a calliper or ruler, from the inner edge of one lug to the other, to avoid purchasing errors.

What is the best strap for the Omega LadyMatic 425.27.34.20.55.003?

For the LadyMatic 425.27.34.20.55.003, alligator represents the choice of excellence, particularly in black, cognac brown or dark burgundy tones. These choices emphasise the jewel-like character of the watch and create visual continuity with the two-tone gold and steel case. Alternatively, vegetable-tanned calf develops natural patina over time and offers superior wrist comfort, with equally refined aesthetic pairing.

How do you change the strap on a watch with solid lugs like the LadyMatic?

The LadyMatic 425.27.34.20.55.003 features straight lugs (not quick-release). To replace the strap, you must use a specific tool, a lug strap wrench, to extract the pins connecting the strap to the case. Gently remove the old strap by pushing the pins outward, then insert the new strap by aligning it perfectly with the lugs before reinserting the pins. If you lack experience, the Casati Milano atelier offers a replacement service with warranty.

Which aftermarket straps are compatible with the Omega LadyMatic 425.27.34.20.55.003?

Any standard strap with a 16 millimetre lug width is compatible with the LadyMatic 425.27.34.20.55.003. On milanostraps.it you will find a complete selection of 16mm straps in alligator, calf, shell cordovan and technical rubber, customizable in sizes, colours, initials and stitching type. All straps are made to measure and ready for shipment.

How long does a leather strap typically last on a watch like the LadyMatic?

The lifespan of a leather strap depends on usage and quality of craftsmanship. A high-quality artisanal alligator or calf, if properly maintained and not constantly exposed to excessive moisture or direct UV rays, lasts between 3 and 5 years of daily use. Shell cordovan, thanks to its superior density, can last up to 7-8 years. Regular maintenance (cleaning, occasional conditioning) significantly extends longevity. Casati Milano guarantees its straps for 18 months.

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