Strap for GMT-Master II Two Tone / Black

The lug width of the Rolex GMT-Master 16713 is 20mm. This measurement represents the distance between the two lugs on the case where the spring bars attach. It is essential to verify that a replacement strap features identical lugs to ensure precise fitting without mechanical play.

The optimal strap depends on usage and personal preference. Premium alligator is the luxury choice: fine, uniform grain and uncompromised elegance. Shell cordovan offers pronounced character and rich patina development. Vegetable-tanned leather suits those who appreciate visible natural ageing. Semi-gloss calf represents balance between luxury and practicality. For casual styling, cotton-heavy NATO or ballistic nylon transforms the 16713 into a more utilitarian instrument.

Strap replacement requires precision. Use a dedicated spring bar tool: insert the tip into the lateral hole of the lug, apply controlled pressure to release the internal spring, remove the pin gently. Repeat on the opposite side. Align the new strap lugs with the case holes, then reposition the pins until definitive engagement. Avoid direct impacts on the case.

Yes, any artisanal or aftermarket strap with 20mm lugs is compatible with the 16713. The 20mm measurement is shared by numerous Rolex sports models: Submariner 5512/5513, original GMT-Master references, various Daytona chronographs. Always ensure the lug is of elevated constructive quality and pins are stainless steel to prevent oxidation.

Leather strap durability depends on material, tanning process, and frequency of use. Premium alligator or shell cordovan, with proper maintenance, may last 3-5 years of daily wear. Vegetable-tanned leather ages naturally but remains functional beyond 5 years if maintained. Prolonged exposure to humidity, direct sunlight, and heat accelerates deterioration. To maximise lifespan, rotate straps and apply specific conditioners every 6-12 months.