Strap for Aquanaut Travel Time 5164 Stainless Steel / Black

No. The bracelet is integrated into the case with a proprietary attachment: no standard strap will fit. That is simply how this watch was designed. When a client brings it to my workshop, I build everything bespoke, starting directly from the case.

I work on this type of watch by appointment only, at <a href="/pages/casati-booking">Casati Milano</a>, Via XX Settembre 15, Milan. I take the measurements directly from the case at the bench and shape the attachment by hand. There are no standard sizes — every strap is made for that specific watch.

For a watch with this character — sporting but never rough — I prefer Tuscan vegetable-tanned leather. It ages with dignity, holds up to daily wear and stays true to the contemporary spirit of the steel case. Alligator is a valid choice for a more formal register, but Tuscan leather is more honest with the soul of this watch.

With regular use and a little care, a quality leather strap lasts between five and eight years. The upkeep is straightforward: keep it away from prolonged exposure to water, let it breathe, and apply a natural conditioner occasionally. Good leather does not deteriorate — it transforms, taking on the character of the person wearing it.

The 5164A is the Travel Time version of the Aquanaut family: it displays two time zones simultaneously, with a mechanism that advances or retards the second time zone one hour at a time without stopping the movement. For frequent travellers, it is a practical convenience rather than a decorative complication. Patek built this function with the same pragmatic logic that runs through the entire sporting family.