Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Yellow Gold / MOP / Diamond

The lug width of the Omega Constellation 131.55.29.20.55.002 is 18mm. This width is specific to this model and determines which strap can be fitted. Always measure the distance between the two metal pins of the case to verify compatibility before purchase.

For this Constellation we recommend a toasted brown alligator or shell cordovan strap. Alligator naturally complements yellow gold with its irregular texture, while shell cordovan offers exceptional durability and a lustre that emerges over time. Vegetable-tanned calf is a contemporary alternative that ages beautifully.

Strap replacement requires a dedicated tool (spring bar tool) to remove the pins from the lugs. Insert the flat tip of the tool into the small slot on the pin spring, apply gentle pressure to retract the spring, and the pin will disengage from the case. Repeat for both sides. Fit the new 18mm strap by inserting one pin first, then align the other side and insert the second pin.

Yes, any strap with an 18mm lug width is physically compatible. However, we recommend superior quality straps (alligator, shell cordovan, vegetable-tanned calf) from specialist suppliers such as MilanoStraps to ensure aesthetic coherence with the value of the yellow gold watch and appropriate construction durability.

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) on a Constellation worn daily has a useful life of 3-5 years. Vegetable-tanned leathers develop patina and character within the first year. Factors such as humidity, sun exposure and cleaning frequency affect longevity. With proper maintenance, shell cordovan frequently exceeds 5 years.