Zenith Revival 03.A3648.670/21.M3648
The Zenith Revival 03.A3648.670/21.M3648 takes an 18 mm watch band.

Zenith · Revival
- Lug width
- 18 mm
- Case diameter
- 37 mm
- Reference
- 03.A3648.670/21.M3648
- Family
- Revival
- Case material
- Acciaio
- Model
- Defy A3648 Revival
- Year
- 2024
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: 37 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 37 mm case depends on how that case is shaped.
- Inside the Revival family the lug width is not one number: it runs 18, 19, 20 mm. This reference is the 18 mm one, so a band bought for another Revival 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 Revival references
- Defy A3690 Revival03.A3642.670/3690.M3642
18 mm - Defy A3691 Revival03.A3642.670/3691.M3642
18 mm - Defy A3642 Revival03.A3642.670/75.M3642
18 mm - El Primero A3818 Revival The Cover Girl03.A3818-U.400/33.M384
20 mm - El Primero A3818 Revival The Cover Girl03.A3818.400/51.M3818
20 mm - El Primero A384 Revival 50th Anniversary El Primero Stainless Steel / Panda / Alligator03.A384.400/21.C815
19 mm
Same lug width, other Zenith lines
- Class Sport El Primero Stainless Steel / Silver / Bracelet03.0510.400/04.M510
18 mm - Class Sport El Primero Stainless Steel / Black / Bracelet03.0510.400/24.M510
18 mm - Elite Central Second Boutique Edition03.2022.670/38.C498
18 mm - El Primero Chronomaster Open Stainless Steel / Silver/ Rubber03.2040.4061/01.R576
18 mm - El Primero Open World Stratos Meeting03.20417.4061/07.C772
18 mm - El Primero Tourbillon Stainless Steel / Black03.2050.4035/21.C630
18 mm
Millenium Cognac Alligator Strap
Matte Blue Alligator Strap
Matte Dark Gray Alligator Strap
Hammered Calfskin Strap Light Blue
Hammered Calfskin Watch Strap Green with Ecru Stitching