Strap for Aquaracer 300M Calibre 16 42 Stainless Steel / Blue / Bracelet

The lug width is 20mm. This measurement represents the internal distance between the spring bars, not the total width of the integrated bracelet. Measure with a digital calliper perpendicular to the case, between the inner edges of the lugs, for accurate assessment. A correctly dimensioned strap must fit into the lateral spaces of the case without forcing or wobbling.

It depends on your usage pattern. Alligator in blue or black offers sporty elegance and develops natural patina over time. Vegetable-tanned calf leather provides lightness and excellent breathability in summer. NATO nylon ripstop strap guarantees military practicality and quick-swap functionality. Vulcanised rubber is ideal for recreational diving due to superior grip. Your choice reflects your wrist and context: wear with blazer—choose alligator; beach holiday—choose rubber.

The integrated bracelet is secured with two spring bars. Remove them carefully using a dedicated spring bar tool or push downward with a clean coin and plastic mallet. Never force with sharp metal objects, which risk scratching the lugs. Once the lugs are free, the new strap slides in easily. Reinsert the spring bars ensuring they click into position. If unsure, entrust the operation to an authorised service centre to prevent lug damage.

Absolutely, yes. A quality aftermarket strap, sized 20mm at the lugs, is entirely compatible. In fact, it is the preferred choice for those wishing to personalise their timepiece. Artisanal leather straps in vegetable-tanned or alligator often exhibit construction quality superior to original bracelets, featuring invisible stitching, hand-finished edges and carefully selected materials. Simply ensure the lugs are correctly dimensioned and the passant—the section wrapping your wrist—is proportionate to the case diameter.

A quality leather strap, with proper maintenance, lasts 3–5 years with daily wear, up to 8–10 years with moderate use. Alligator is more mechanically resilient than calf. Longevity depends on humidity exposure, wrist perspiration, frequency of wear and preventive treatment. Protect the strap from prolonged immersion in fresh water (calf absorbs moisture); apply water-repellent balm every 6 months; air the strap when not wearing it. With these precautions, a vegetable-tanned leather strap ages beautifully, developing patina that narrates your story.