Strap for Constellation Automatic 35.5 '95 White Gold / Year of the Snake

The Omega Constellation 1900.40.51 has a lug width of 20 millimetres. This measurement is critical to the overall aesthetics of the watch: a strap that is too narrow visually flattens the case, while one that is too wide makes it appear floating. To verify compatibility, measure the space between the two lugs on the case: it must be exactly 20 millimetres.

Fine alligator represents the classic choice for this version: the regular texture of mississippiensis alligator skin pairs perfectly with the sophistication of white gold. Natural shades such as taupe grey, hazelnut and beige create discrete harmonies. Alternatively, shell cordovan offers mechanical solidity and dramatic ageing, while vegetable-tanned calf allows a natural patina that evolves over time. For those who love versatility, a canvas NATO enables rapid changes without tools.

The strap is changed via the spring bars located in the lugs. Use a dedicated tool to lift both ends of the bar in sequence: controlled pressure on one side allows you to release tension and slide the bar out. Once the old strap is removed, insert the new one by aligning the holes to the lugs and reposition the bars using the same sequential technique. A micro telescope or magnifying lens is recommended to avoid scratches on the polished case finishes.

Yes, any strap with a 20 millimetre lug width is mechanically compatible. However, aesthetic compatibility depends on conscious material choices: white gold requires straps in noble materials (alligator, cordovan, quality calf) to maintain coherence of refinement. Poor quality synthetic leather straps or rough finishes betray the dignity of the watch. Always verify that the strap thickness does not exceed 5 millimetres to avoid compression on the lugs.

Durability depends on the quality of the leather and the intensity of wear. Fine alligator of quality, worn daily without repeated contact with moisture, guarantees 8-12 years before visible structural failure. Shell cordovan resists beyond 15 years thanks to superior structural density. Vegetable-tanned calf shows visible signs of ageing after 5-7 years of daily wear, but remains wearable. Constant exposure to moisture, intense perspiration and thermal variations accelerates deterioration: in these contexts, rotating between 2-3 straps extends the overall lifespan of each individual piece.