Strap for Constellation Quartz 27 Brushed Stainless Steel / Yellow Gold / Diamond / MOP Omega

The Omega Constellation 123.25.27.60.55.010 is fitted with a 20mm lug width. This measurement is specific to mid-sized Constellation models and is essential to ensure compatibility with aftermarket straps. Measuring lug width means calculating the distance between the two metal lugs (spring bar holders) that protrude from the case. For your watch, any 20mm strap will be suitable for installation.

Given the feminine and sophisticated nature of this model, we recommend alligator, Hermès calf leather, or vegetable-tanned calfskin in neutral tones (tan, dark brown, black). For more informal contexts, a silver-grey NATO or FKM rubber remain elegant choices. The best pairing depends on the patina of the mother-of-pearl dial and the color temperature of the yellow gold case.

Changing the strap on a 27mm Constellation requires minimal tools: a spring bar tool and a stable work surface. Position the watch with the lug facing upward, insert the tool into the small hole at the base of the lug, push downward to compress the internal spring, and slide out the old strap. Repeat on the other side. Install the new strap in reverse order. If you are unsure, a watchmaker can perform the operation in a few minutes at minimal cost.

Absolutely. The Omega Constellation 123.25.27.60.55.010 accepts any strap with a 20mm lug width, regardless of brand or material. Many collectors choose artisanal straps to personalize their watch and protect it from daily wear. Compatibility is guaranteed: the internal spring geometry is standard in the industry.

A quality leather strap, such as those in alligator or vegetable-tanned calfskin, lasts an average of 3–5 years under moderate use (5–6 days per week). Longevity depends on sun exposure, humidity, frequency of skin perspiration, and maintenance. FKM or natural rubber straps have similar longevity but are more water-resistant. An artisanal strap with an 18-month warranty covers the critical break-in period.