Strap for Master Ultra Thin Moon Pink Gold / Gradient Blue

The Jaeger-LeCoultre Master Ultra Thin 1362580 features a precise lug width of 21 mm. This is a specific measurement for this particular model: 20 mm straps will be too tight, whilst 22 mm straps will create unwanted looseness. To verify the correct width accurately, measure the internal space between the case lugs where the strap inserts.

For this excellence-grade timepiece, the ideal strap is alligator with fine grain, preferably in cognac or bordeaux tones, which enhance the luminosity of the rose gold. Alternatively, shell cordovan from vegetable-tanned calf offers a rich patina that ages beautifully. Native calf with vegetable tanning is recommended for those who appreciate structured texture. Low-quality synthetic straps are strongly discouraged, as they would contradict the intrinsic value of the watch.

Strap replacement is performed via spring bars (spring-loaded pins) inserted into the case lugs. Use a dedicated spring bar tool to compress the bar and remove the worn strap. Insert the new 21 mm strap, ensuring the spring bars click securely into position. We recommend having this operation performed by an official Jaeger-LeCoultre service centre or specialised artisans such as Casati Milano to avoid scratching the case.

Yes, it is absolutely possible to fit a quality bespoke strap to this Jaeger-LeCoultre. In fact, it is common practice among collectors. The key is to choose the precise 21 mm lug width and noble materials—alligator, shell cordovan, or vegetable-tanned calf—that reflect the watch's prestige. Milanostraps and the Casati Milano atelier offer bespoke straps specifically dimensioned for 21 mm lugs, guaranteeing construction quality and durability.

A premium leather strap such as alligator or shell cordovan typically lasts 3–5 years with moderate daily wear. Lifespan depends on factors including frequency of wear, UV exposure, humidity and tanning quality. To extend strap life, avoid water immersion, protect from excessive perspiration and occasionally apply protective creams. A well-maintained strap can last beyond 5 years, developing an authentic patina that adds aesthetic value to the overall ensemble.