Strap for Aquatimer Chronograph Stainless Steel / Black / Rubber

The lug width of the IWC GST Aquatimer IW3768-03 is 22 millimetres. This measurement is taken internally, from the inner face of one spring bar to the other. Any strap constructed for a 22mm lug width will fit perfectly onto the spring bars of the case.

For frequent underwater use, a rubber or silicone strap resists saltwater and does not absorb moisture. For daily sports wear, alligator or vegetable-tanned calf leather offer elegance with practical properties. Alligator in particular creates a fascinating contrast with the brutality of the stainless steel case.

The change is straightforward: remove the watch from your wrist and locate the two spring bars (metal lugs) on the sides of the case. Use a dedicated tool or thin shim to push the springs inward, extracting one end of the strap first, then the other. Insert the new strap in the reverse sequence.

Yes, absolutely. Any strap manufactured for a 22 millimetre lug width is compatible with the IW3768-03. The aftermarket offers thousands of options in leather, rubber and fabric. The important thing is to verify that the strap has been correctly measured in internal lug width.

Durability depends on use and maintenance. A calf leather strap with vegetable tanning, worn regularly but not in intense aquatic environments, lasts 3-5 years before requiring replacement. Alligator, being more resistant, can exceed 5 years. Rubber offers greater durability, up to 7-10 years, but loses elasticity over time.