Jaeger-LeCoultre · Master Ultra Thin
Strap for Master Ultra Thin Perpetual White Gold / 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 diameter39 mm
Reference1303501
FamilyMaster Ultra Thin
MovementJaeger-LeCoultre caliber 868/1
Hours, Minutes, Seconds | Date, Day, Month, Year Indicator, Perpetual Calendar | Moonphase
CaseWhite Gold
Straps for the Master Ultra Thin 1303501
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 1303501, seen from the bench
The Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar ref. 1303501 features a 39mm white gold case housing the in-house caliber 868/1 automatic movement. This model displays hours, minutes, seconds, day, date, month, year, and moonphase with perpetual calendar function requiring no manual adjustment until 2100. The 20mm lug width accommodates straps with compatible tapered geometry, typically 16–18mm at the buckle end.
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