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Omega · Constellation

Strap for Constellation Co-Axial 31 Double Eagle Stainless Steel / Yellow Gold / MOP

Takes 14 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

14mm
14 mm strapsAll Omega
Lug width14 mm
Case diameter31 mm
Reference1390.70.00
FamilyConstellation
MovementOmega caliber 2500 hours, minutes, seconds | date | co-Axial escapement, chronometer
CaseMother of Pearl | Yellow Gold, Stainless Steel

Spring bar

Spring bars for Omega

The right category for this model · choose the 14 mm size

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The Constellation 1390.70.00, seen from the bench

The Omega Constellation reference 1390.70.00 is equipped with the automatic caliber 2500 with Co-Axial escapement and chronometer certification. The movement offers indication of hours, minutes, central seconds and date. The watch utilizes the Co-Axial technology developed by Omega to reduce the friction of the escapement mechanism.

Frequently asked questions

What is the lug width of the Omega Constellation 1390.70.00?

The Omega Constellation 1390.70.00 has a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 14mm. This specific dimension is one of the critical parameters to verify before purchasing an aftermarket strap: an error in measurement would result in incompatibility with the case lugs.

Which strap is best suited for the Omega Constellation 1390.70.00?

For this Constellation, the ideal strap depends on your intended use and desired aesthetic. <a href="/pages/termine-glossario/alligatore">Alligator</a> leather offers sophistication and long durability (15-20 years with proper maintenance), vegetable-tanned calf provides noble aging with natural patina, and NATO ensures sportiness and everyday practicality. For the mother-of-pearl and yellow gold model, we recommend dark leathers or neutral tones that enhance the precious materials of the case.

How do I change the strap on my Omega Constellation 1390.70.00?

Strap replacement requires the use of a spring bars removal tool. Insert the tool tip into the slot between the case lug and the spring bar, release the spring, and slide the bar out of the holes. Use the reverse procedure to mount the new strap. If you are not experienced, the Casati Milano team can perform the replacement during a consultation by appointment.

Is a 14mm aftermarket strap compatible with the Omega Constellation 1390.70.00?

Yes, any strap with a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 14mm is compatible with the spring bars of your Omega Constellation 1390.70.00. However, quality varies significantly: a bespoke strap crafted to measure guarantees superior finishing, selected leather, and an artisanal <a href="/pages/termine-glossario/deployante">deployant clasp</a> or buckle that enhances your investment.

How long does a natural leather strap last on an Omega Constellation 1390.70.00?

A quality natural leather strap (alligator or vegetable-tanned calf) lasts an average of 10-15 years with regular use and proper maintenance. Durability depends on exposure to moisture, perspiration, direct sunlight, and frequency of use. Casati Milano's artisanal straps are guaranteed for 18 months against manufacturing defects, and can be serviced or regenerated over time to extend their lifespan.

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