Hamilton Timeless Classic H38415581
The Hamilton Timeless Classic H38415581 takes a 20 mm watch band.

Hamilton · Timeless Classic
- Lug width
- 20 mm
- Case diameter
- 38 mm
- Reference
- H38415581
- Family
- Timeless Classic
- Case material
- Acciaio
- Model
- Thin-O-Matic
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: 38 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.
Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.
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 38 mm case depends on how that case is shaped.
- Inside the Timeless Classic family the lug width is not one number: it runs 16, 20 mm. This reference is the 20 mm one, so a band bought for another Timeless Classic 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 →
Other Timeless Classic references
- Thin-O-MaticH38415181
16 mm - Thin-O-MaticH38415731
20 mm - Thin-O-MaticH38435221
20 mm - Thin-O-MaticH38435721
20 mm - Thin-O-MaticH38715131
16 mm - Thin-O-MaticH38715181
20 mm
Same lug width, other Hamilton lines
- Khaki Field Quartz 38 Stainless Steel / White / Bracelet| H69401110
20 mm - Lady Hamilton Vintage Quartz Red Gold / MOPH31241113
20 mm - Lady Hamilton Necklace Rose Gold / MOPH31241190
20 mm - Lady Hamilton Vintage Quartz Stainless Steel / MOPH31271113
20 mm - Jazzmaster Lady Quartz 34mmH32311135
20 mm - Jazzmaster Lady Quartz 34mmH32311735
20 mm
Hammered calfskin strap in cuoio
Grey Hammered Leather Strap with Ecru Stitching
Brown Saffiano Leather Strap
Black Saffiano Rubber Strap
Dark Brown Calfskin Military Strap