Strap for Master Collection 40 Chronograph Calendar Pink Gold / Silver / Bracelet

The lug width of the Longines Master Collection L2.673.8.78.6 is exactly 21mm. This measurement represents the inner distance between the two lugs of the case and determines strap compatibility. It is essential to verify this measurement with a digital calliper before ordering, as straps of 20mm or 22mm will not fit correctly.

For the 40mm pink gold case, we recommend grade A alligator in deep cognac or brown tones, which harmonises naturally with the warm metal. An excellent alternative is aged calf leather in grey-beige tortora for a more contemporary aesthetic, or black calf for maximum formality. Your choice depends on intended use: daily formal wear suggests black, whilst versatile use favours cognac or tortora.

Strap replacement requires specific tools: a spring bar removal tool and fine-pointed tweezers. Position the watch on a stable surface, insert the tool into the lateral opening of the lug to compress the internal spring of the bar, then remove the old strap. Repeat on the opposite side. Insert the new spring bar (if replacement is necessary) and secure the new strap with gentle pressure until it clicks into place.

Absolutely. A handcrafted strap with 21mm lugs is fully compatible. We recommend verifying that the strap features quality spring bars (stainless steel or titanium) and that the stitching is robust and regular. Straps made by experienced artisans often offer superior quality to OEM suppliers, with choice of premium leathers and bespoke finishing options.

Durability depends on material and usage intensity. High-quality alligator or shell cordovan, with proper maintenance, lasts 4–6 years in intensive daily wear. Standard calf leather averages 3–5 years. Vegetable-tanned leather ages beautifully and develops a refined patina, extending aesthetic appeal even beyond functional wear. Determining factors include climate (humidity accelerates ageing), personal perspiration, cleaning frequency, and storage in dry environments.