Strap for Seamaster Aqua Terra 150M Master Chronometer 38 Stainless Steel / Silver / Alligator

The Omega Aqua Terra 220.13.38.20.02.001 has a lug width of 19mm. This dimension is determined by the distance between the lugs of the case and is not interchangeable with 18mm or 20mm straps. To verify the measurement, place a ruler perpendicular to the lugs and read the free space between them.

For the Aqua Terra 220.13.38.20.02.001, straps in vegetable-tanned alligator are recommended—for elegance and natural patina development over time—or fine-grained calf for everyday comfort. Shell cordovan is ideal if the watch is used in humid or marine environments, thanks to its superior water resistance. Avoid nylon or canvas straps, which are incompatible with the refined aesthetic identity of the model.

Use a spring bar tool to insert the pin into the hole of the internal spring and lift the pin slightly from the case. Once extracted, the old strap separates. To mount the new one, position the top pin in the lug first, then press the strap downward until the bottom pin clicks into place. A simple operation that requires only care and a dedicated tool.

Yes, absolutely. Any 19mm strap is compatible. On MilanoStraps you will find a collection of artisanal straps specifically calibrated for this lug width, available in various materials (alligator, calf, cordovan) and customizable in length, initials, and stitching color. A quality aftermarket strap can completely transform the appearance of the watch without compromising safety.

A premium artisanal leather strap (alligator, calf, shell cordovan) typically lasts 4–7 years with daily use, varying depending on wrist perspiration, sun exposure, and maintenance. Vegetable-tanned straps develop a pleasant patina over time. The warranty typically covers 18 months against manufacturing defects; natural wear and leather aging fall under ordinary consumption. Periodic replacement is part of the philosophy of owning a mechanical watch.