Strap for Master Collection Date 38.5 Stainless Steel Diamond

The Longines Master Collection L2.628.4.77.3 features a lug width of 20 millimetres. This measurement is critical for strap compatibility: a 20 mm strap fits perfectly into the lug holes without excessive play or forcing. To verify, measure the distance between the two lugs using a digital calliper. All our straps for this size are manufactured with a tolerance of ± 0.3 mm to ensure flawless fitment.

For this dress watch, we recommend alligator in dark brown tones (walnut or mahogany) for uncompromising elegance, or vegetable-tanned calf leather if you prefer a natural patina that ages beautifully. Should you wear the watch in informal settings, articulated rubber (Tropic) maintains visual lightness. Avoid excessively thick straps (over 1.4 mm): the 38.50 mm case proportions require harmony and balance.

The strap is changed by extracting the spring bars that connect the lug holes to the case. Obtain a spring bar tool (a small stainless steel extractor): position the tip beneath the bar and gently lift the strap from one side. Repeat on the other bar. When inserting the new strap, align the bars with the holes and apply symmetrical pressure until you hear the closure click. If you lack confidence, consult a professional watchmaker: the operation takes 5 minutes and costs between 10 and 20 euros.

Yes, provided the strap is 20 mm in lug width. Our artisanal straps are engineered to Longines specifications and are entirely compatible with this model. Recommendation: when ordering, communicate the exact model (L2.628.4.77.3) and case diameter (38.50 mm) to our team. We also provide guidance on total length and closure type (deployant clasp for leather, standard buckle for NATO).

A quality alligator or calf leather strap, worn daily, lasts approximately 4–6 years. Durability depends on sun exposure, humidity, and cleaning frequency. Vegetable-tanned leather ages faster visually but remains structurally robust. If you wear the watch in humid environments (shower, poolside), expect 3–4 years. Rubber lasts longer (8–10 years) but loses elasticity over time. Our service provides an 18-month warranty on all artisanal straps: this covers stitching and manufacturing defects, not natural wear.