Strap for Constellation Manhattan 25 Quartz Stainless Steel - Yellow Gold - Diamond / Silver Meteorite

The lug width of the Omega Constellation 131.25.25.60.99.002 is 18 millimetres. This dimension is structural to the case and does not vary between individual examples. To verify it personally, remove the strap and measure with a calliper the internal distance between the two lateral lugs: the result must be exactly 18mm. All compatible straps online are catalogued for this specific measurement.

For a Constellation with two-tone case (yellow gold and steel) and meteorite dial, we recommend alligator in cognac or medium brown tones: the regular texture enhances the geometric lines of the griffes and the natural patina of the leather evolves over time like the dial. Alternatively, shell cordovan worked with vegetable tanning offers fine grain and superior structural rigidity, acquiring character in the long term. For versatile everyday use, calf leather dyed in French tan guarantees initial softness and solid construction.

The procedure is identical to any wristwatch: position the watch face down on a soft cloth, locate the lateral lugs (the two metal hooks on the sides of the case) and use a spring bar tool or a blunt toothpick to push down the small spring inside each lug. Once the spring is compressed, the lug pulls out easily from its seat. Repeat the operation symmetrically, then insert the new strap following the reverse procedure. Avoid forcing: if the lug does not slide, repeat the spring pressure with greater precision.

Yes, absolutely. The Omega Constellation 131.25.25.60.99.002 was designed with an 18mm lug width precisely to allow strap interchangeability. Any artisanal strap catalogued for 18mm lug width is mechanically compatible and requires no constructive modifications. However, always verify the lug width before ordering: an incorrect measurement is the main cause of incompatibility. Online you will find a complete collection of 18mm straps ready for shipment, customisable in sizes, initials and materials.

The lifespan of a strap depends on the material chosen and its use. Genuine alligator, thanks to its grain structure and cellular density, typically resists 4-6 years of moderate daily use (alternating with other straps). Shell cordovan, due to its structural rigidity, can exceed 7-8 years. Calf dyed in French tan, being softer, generally wears more quickly (2-4 years) in areas of greatest flexion. Vegetable tanning ensures graceful ageing rather than sudden failure. All straps made by Casati Milano include an 18-month warranty against manufacturing defects and stitching, regardless of natural leather wear.