Strap for Seamaster Aqua Terra 150M Master Chronometer 38 Stainless Steel / Black / Bracelet

The lug width of the 220.10.38.20.01.004 model is 19mm. This width is specific to this Seamaster Aqua Terra and must be strictly respected to ensure perfect fit to the case without residual play or excessive tension.

Medium brown alligator or vegetable-tanned calf leather are the most appropriate choices for this model: they enhance the laminated blue dial and harmonize with the brushed steel case. For those seeking versatility, a navy blue NATO strap is a reliable solution that respects the marine character of the Aqua Terra.

Changing the strap requires a spring bar tool to extract the elastic pins (spring bars) from the case lugs. Position the tool in the small slot of the pin, gently push to create a gap, and extract the pin. Repeat on the other side, then insert the new strap with its spring bars into the lug housings and press until the click closes.

A quality alligator or calf leather strap, with proper maintenance, has an average durability of 18-24 months with moderate daily use. Factors such as perspiration, sun exposure, and humidity accelerate its aging. The patina that develops is natural and sought-after, but the strap should be replaced when the fibers weaken or show signs of breaking at the edges.

Yes, any quality strap with a 19mm lug width is technically compatible. However, it is essential to verify that the thickness of the strap terminals fits correctly into the case lugs: excessive thickness can create tension, while insufficient thickness generates lateral play. Custom straps ensure optimal fit and compatibility warranty.