Strap for Master Collection 38.5 Day Date Day Date Stainless Steel / Pink Gold / Silver-Arabic / Bracelet

The Longines Master Collection L2.755.5.79.7 features a 20 mm lug width, the international standard for chronographs and mid-sized classical watches. This measurement refers to the distance between the lugs of the case where the spring bars are attached. Precise measurement of the lug width is essential for selecting compatible aftermarket straps without error.

The choice depends on your intended use and dial colour. For classical styling, dark brown alligator or Hermès vegetable-tanned calf leather are ideal with a blue dial; solid black alligator suits a silver dial. For everyday versatility, Bordeaux shell cordovan offers an evolving patina over time, whilst polyamide NATO transforms the watch into a sports instrument. The original rose gold deployante buckle remains compatible with all straps featuring spring bar attachment loops.

The process is straightforward: obtain a quality spring bar tool. Place the watch on a soft surface, position the tool's tip beneath the spring bar, apply gentle upward pressure until it disengages. Repeat on the opposite side. Insert the new strap's spring bar into the lug seats and press firmly until it clicks into place. An atelier like Casati Milano provides this service with guaranteed quality craftsmanship.

Yes, provided the strap features a 20 mm lug width and is fitted with spring bar loops (not fixed lugs). Most artisanal straps, from alligator to shell cordovan, utilise this standard configuration. Always verify with the manufacturer that the strap is sized for 20 mm and compatible with your original rose gold deployante buckle if you wish to retain it.

Durability varies with material and usage intensity. Quality alligator and shell cordovan straps, with regular maintenance (monthly dry cleaning, semi-annual conditioning with appropriate balms), last 5-7 years. Vegetable-tanned calf leather typically ages faster (3-5 years) but develops a beautiful patina. The rose gold deployante buckle requires no maintenance. An atelier like Casati Milano offers reconditioning services and component replacement to extend strap lifespan.