Strap for Constellation Co‑Axial Master Chronometer 27 Small Seconds Stainless Steel / Yellow Gold / MOP

The lug width of the Omega Constellation 127.20.27.20.55.002 is 17mm. This measurement is the internal space between the two lugs of the case and is fundamental for compatibility with aftermarket straps. Always measure the internal distance between the inner edges of the lugs, perpendicular to the pin axis, to ensure maximum accuracy.

For the 127.20.27.20.55.002 we recommend vegetable-tanned alligator (dark blue or anthracite grey), shell cordovan in burgundy or cognac, or box calf with alligator embossing. Genuine alligator remains the most conservative and durable choice for a watch of this quality. On a mother-of-pearl dial, avoid saturated colors that would compete with the watch itself.

The strap is changed by removing the spring bars from both sides of the case. Use a spring bar tool, inserting the forked tip under the pin until it pops out. Once released, gently remove the old strap. Insert the new strap (17mm width) and reposition the spring bars ensuring they lock firmly in place. Check that the case does not pivot laterally on the strap.

Yes, if it is certified for 17mm lug width. All straps from the 17mm collection of Milano Straps are tested for compatibility with this model. Always verify that the internal keeper is sized to accommodate the spring bar without friction and that the external width does not exceed the case edges.

A quality leather strap (alligator, shell cordovan, box calf) lasts between 3 and 5 years of daily wear, depending on climate, frequency of use and care. Leather absorbs moisture and degrades if continuously exposed to sweat. To extend its life, store it in a dry environment, clean it monthly with a damp cloth and let it rest at least one day per week. Milano Straps offers an 18-month warranty on custom straps.