Strap for Aquis Date Calibre 400 41.5 Staineless Steel - Yellow Gold / Green / Bracelet

The lug width is 22mm. This measurement refers to the distance between the inner edges of the two lugs (the supports where the strap attaches). You can verify this using a digital caliper positioned on the inner walls of the lugs. Accurate measurement is essential to avoid compatibility issues during strap installation.

For the 01 400 7769 6357-07 8 22 09PEB, we recommend dark brown alligator for formal occasions, Italian vegetable-tanned calf leather (havana tone) for elegant daily wear, or a robust ballistic nylon NATO if you intend to use the watch for regular diving. Your choice should balance aesthetics with diving functionality.

Remove the old strap by inserting a spring bar tool into one of the lug holes and gently pressing downward to release the spring bar. Repeat on the other side. Insert the new strap by aligning the spring bars into the same holes and ensure the spring bar is fully seated. Proceed carefully to avoid scratching the case lugs.

Yes, any strap with 22mm lug width is physically compatible. However, to respect the diving heritage and construction quality of this timepiece, we recommend technical materials (FKM rubber, vegetable-tanned calf, ballistic NATO) or luxury options (alligator). Always verify that the strap has straight spring bars of standard diameter.

A quality leather strap, even vegetable-tanned, typically lasts 3–5 years with regular use. If frequently exposed to salt water (diving), durability drops to 2–3 years. To extend lifespan, thoroughly dry the strap after each seawater contact, apply leather conditioner 1–2 times annually, and consider alternating with a ballistic NATO during diving seasons.