Patek Philippe Golden Ellipse 3738/100J-012
The Patek Philippe Golden Ellipse 3738/100J-012 takes an 18 mm watch band.

Patek Philippe · Golden Ellipse
- Lug width
- 18 mm
- Case diameter
- 31 mm
- Reference
- 3738/100J-012
- Family
- Golden Ellipse
- Case material
- Oro giallo
- Model
- Golden Ellipse 3738 Yellow Gold / Blue
- Year
- 2008 - 2018
Bands that fit
Cut and stitched in Milano, in the width this watch takes.
Will a strap close on your wrist?
Set for this watch: 31 mm of case and 18 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.
Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.
Sizing notes
- 18 mm is the gap between the lugs, so a 18 mm band goes in without adapters. Whether it sits flush against a 31 mm case depends on how that case is shaped.
- Inside the Golden Ellipse family the lug width is not one number: it runs 15, 18, 20 mm. This reference is the 18 mm one, so a band bought for another Golden Ellipse may not fit it. Why the size changes inside a family →
- 18 mm is not a common size: only 3,965 of the 41,485 watches measured take it (9.6%), so ready-made choice at this width is narrower than at 20 or 22 mm. Every watch that takes 18 mm →
Other Golden Ellipse references
- Golden Ellipse 3738 White Gold / Grey3738/100G-012
integrated - Golden Ellipse 3738 Rose Gold / Brown3738/100R-001
integrated - Golden Ellipse 5738 Rose Gold / Black / Bracelet5738/1R-001
20 mm - Golden Ellipse 5738 White Gold / Japanese Prints5738/50G-001
integrated - Golden Ellipse 5738 White Gold / Japanese Prints5738/50G-010
integrated - Golden Ellipse 5738 White Gold / Japanese Prints5738/50G-011
integrated
Same lug width, other Patek Philippe lines
- Perpetual Calendar 34483448J
18 mm - Perpetual Calendar 34483448J Howes
18 mm - Calatrava 3718 150th Anniversary Japanese Market Ivory3718A Ivory
18 mm - Calatrava 3718 150th Anniversary Japanese Market Slate3718A Slate
18 mm - Calatrava 3802/200J3802/200J-001
18 mm - Perpetual Calendar 3940 Yellow Gold / Painted Roman3940J-025
18 mm
Millennium Green Alligator Strap
Matte Dark Brown Alligator Strap
Matte Black Alligator Strap
Black and Red Driver Strap
Black and Yellow Driver Leather Strap