Omega · Constellation

Strap for Constellation Quadra Quartz 28 Chronograph Stainless Steel / White / Fabric

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter28 mm
Reference1841.35.71
FamilyConstellation
MovementOmega caliber 5200 Small Seconds, Hours, Minutes | Chronograph
CaseStainless Steel

Recommended spring bar

Spring bars Omega Speedmaster Seamaster 19mm

Technical match for lug width and diameter · lug 19 mm · Ø 1.8 mm

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The Constellation 1841.35.71, seen from the bench

The Omega Constellation reference 1841.35.71 is powered by the Omega 5200 calibre with hour, minute, small seconds and chronograph functions. The movement offers a classic configuration with a separate seconds totalizer. The case features traditional proportions in line with the Constellation collection.

Frequently asked questions

What is the correct lug width for the Omega Constellation 1841.35.71?

The Omega Constellation 1841.35.71 requires a lug width of 19mm. This measurement corresponds to the exact distance between the attachment pins on the case. To verify it yourself, place the watch on a flat surface and measure with a digital caliper the space between the two horizontal pins. An 18mm or 20mm strap will not fit correctly, so precision is essential to ensure perfect adjustment and protect the crystal during strap changes.

Which strap materials are most suitable for the Constellation 1841.35.71?

For this elegant women's model we recommend: alligator (regular and formal grain), vegetable-tanned calf leather (natural patina over time), shell cordovan (resistance and colour depth), or NATO canvas with leather keeper (versatility and practicality). Your choice depends on use: alligator for formal occasions, calf for elegant everyday wear, technical rubber for active contexts. The stainless steel case tolerates chromatic variations, allowing you to build a mini-capsule of 3-4 different straps.

How do you change the strap on this Omega without damaging the case?

The Constellation 1841.35.71 has curved integrated lugs, so care is required during strap changes. Use a dedicated tool (spring bar tool) to gently extract the attachment pins, working from below toward the sides of the case. Place the watch on a soft cloth to prevent scratches. Never force the pins: if you encounter resistance, warm slightly with a hair dryer to facilitate removal. Consult Omega documentation or contact Casati Milano atelier for personalized assistance.

Can I use generic aftermarket straps for this model?

Not recommended. The Constellation 1841.35.71 requires specific 19mm straps with curved lugs (not straight), to adapt to the integrated case geometry. Generic straps risk scratching the crystal during installation or fitting incorrectly. Milano Straps offers specific 19mm straps online, or Casati Milano atelier creates custom solutions with a choice of premium leathers and guaranteed fitting.

How long does a leather strap last on a daily-wear watch?

A quality leather strap (alligator, calf, shell cordovan) lasts an average of 3-5 years with daily use, with variability depending on humidity, perspiration, and cleaning frequency. Vegetable tanning extends the natural durability of the material. Casati Milano atelier offers an 18-month warranty on all custom-made straps. To extend lifespan: avoid prolonged moisture, clean regularly with a soft cloth, rotate between multiple straps if possible. Technical rubber requires less maintenance but has similar useful life before hardening.

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