Jaeger-LeCoultre · Master Ultra Thin
Strap for Master Ultra Thin Date
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
20mm
Lug width20 mm
Case diameter40 mm
Reference1288420 (aka: Q1288420)
FamilyMaster Ultra Thin
MovementJaeger-LeCoultre caliber 899 hours, minutes, seconds | date
Year2015
CaseStainless Steel
Straps for the Master Ultra Thin 1288420 (aka: Q1288420)
Selected for the 20 mm lug width · workshop selection
Black Rubberized Alligator Strap with Red Tribal Stitching€185
Matte Dark Gray Alligator Strap€195
Matte Black Alligator Strap — Minimal Stitching€149
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered calfskin strap in cuoio€98
The Master Ultra Thin 1288420 (aka: Q1288420), seen from the bench
The Jaeger-LeCoultre Master Ultra Thin 1288420 (Q1288420) represents the refined philosophy of Le Sentier Manufacture's engineering approach. The 40mm stainless steel case houses the in-house caliber 899 movement, beating at 28,800 vph, combining hours, minutes, seconds and date within a sub-9mm thickness profile. The 20mm lug width accommodates a wide range of compatible straps, balancing proportions and visual tension between case and bracelet.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only