Omega · Constellation
Strap for Constellation Automatic 27.5 My Choice Yellow Gold / MOP
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 Constellation 1191.71.00
Selected for the 16 mm lug width
The Constellation 1191.71.00, seen from the bench
Frequently asked questions
What is the exact lug width of the Omega Constellation 1191.71.00?
The Omega Constellation 1191.71.00 has a lug width of 16mm. This width is essential to ensure that the strap adheres perfectly to the case without lateral gaps. To verify it, use a digital caliper inserted between the case lugs, measuring the internal space of the lug perpendicular to the direction of the pins themselves.
Which strap do you recommend for the Omega Constellation 1191.71.00?
For the Constellation 1191.71.00 in yellow gold, we recommend alligator in cognac or dark brown tones for formal contrast, vegetable-tanned calf for everyday elegance and aging parallel to the gold, or bordeaux shell cordovan for evening occasions. Avoid NATO nylon straps, as their visual shoulder unbalances the proportions of the 27.50mm case.
How do you change the strap on this model without damaging the case?
Strap replacement requires the extraction of the spring bars that connect the strap to the case lugs. Use a specific spring bar tool, gently pushing the pin inward to release the spring, then extract it. Insert the new strap by aligning the holes to the ends of the pin, and reinsert the pin with uniform pressure. If you lack expertise, entrust the task to a certified Omega strap fitter.
Can I use an 18mm strap on this Constellation?
No. An 18mm strap will not fit into the lugs of the 1191.71.00, which are designed for a strict 16mm lug width. Forcing the strap could damage the lug and the pins. Constructive precision is a fundamental principle of Omega manufacturing.
How long does a natural leather strap last on the Constellation 1191.71.00?
An alligator or vegetable-tanned calf strap lasts an average of 4-6 years with daily wear, developing a characteristic smoked patina over time. Shell cordovan guarantees 8-12 years and beyond, thanks to the fibrous density of the leather. Durability also depends on sun exposure, humidity, and frequency of wear. Milano Straps straps include an 18-month warranty and revision services.
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

