Patek Philippe Grand Complications 3939 MOP

The Patek Philippe Grand Complications 3939 MOP takes a 20 mm watch band.

Patek Philippe Grand Complications 3939 MOP, 20 mm lug width

Patek Philippe · Grand Complications

Lug width
20 mm
Case diameter
33 mm
Reference
3939 MOP
Family
Grand Complications
Case material
Platino
Model
Tourbillon Minute Repeater 3939
Year
2010

Will a strap close on your wrist?

Set for this watch: 33 mm of case and 20 mm between the lugs. Add your wrist and see where a standard strap would close.

mm

Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.

75 mm115 mm

Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.

Why ready-made straps come in one length →

Sizing notes

  • 20 mm is the gap between the lugs, so a 20 mm band goes in without adapters. Whether it sits flush against a 33 mm case depends on how that case is shaped.
  • Inside the Grand Complications family the lug width is not one number: it runs 16, 17, 18, 19, 20, 21, 22 mm. This reference is the 20 mm one, so a band bought for another Grand Complications may not fit it. Why the size changes inside a family →
  • 20 mm is one of the common sizes: 15,081 of the 41,485 watches measured take it, which is why it is the width most bands are cut in. Every watch that takes 20 mm →