Strap for Master Collection 40 Date Stainless Steel / Black Roman / Bracelet

The lug width of the Longines Master Collection L2.793.4.51.6 is 21 millimetres. This measurement is taken from the internal attachment points of the case. Verifying this dimension before purchasing a strap ensures perfect fitment without forcing the spring bars.

Alligator with flamed grain or Taurillon calf leather are the optimal choices for the Master Collection L2.793.4.51.6, respecting the formal character of the brushed stainless steel case. Vegetable-tanned alligator develops a noble patina over time, whilst calf leather offers daily practicality with generous thickness and moisture resistance.

To change the strap, remove the two spring bars securing it to the case lugs using a dedicated spring bar tool. Compress the bar gently to release it without damaging the case finishing. Align the new strap's holes precisely with the lugs and reinsert the spring bars, ensuring they click fully into position. Avoid excessive leverage on the attachments.

Absolutely. Any strap with a 21mm lug width is compatible with the Longines Master Collection L2.793.4.51.6. Quality artisanal straps can enhance daily enjoyment significantly, offering material choices (alligator, cordovan, calf) and customisation options (initials, thread colour) unavailable from the manufacturer.

A quality leather strap, with appropriate rotation (not worn daily without breaks), maintains structural integrity for 3 to 5 years. Vegetable-tanned leather ages beautifully and extends this lifespan, whilst calf and alligator develop visible patina after 6-12 months of wear. Excessive moisture, constant perspiration and continuous sun exposure accelerate deterioration.