Jaeger-LeCoultre · Master Ultra Thin
Strap for Master Ultra Thin Moon 34 Stainless Steel / Diamond / Silver / Alligator
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 diameter34 mm
Reference1258401
FamilyMaster Ultra Thin
MovementJaeger-LeCoultre caliber 925/1
Hours, Minutes, Seconds | Date | Moonphase
CaseStainless Steel
Straps for the Master Ultra Thin 1258401
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The Master Ultra Thin 1258401, seen from the bench
The Jaeger-LeCoultre Master Ultra Thin 1258401 is a 34mm stainless steel watch from the Master Ultra Thin family, featuring the in-house caliber 925/1 movement. The case houses hours, minutes, seconds, date, and an astronomically precise moon phase complication accurate to one day every 125 years. The 20mm lug width accommodates standard aftermarket straps, with straight lug geometry ensuring full compatibility with most 20mm options.
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