Seiko Prospex Divers SLA017J1

The Seiko Prospex Divers SLA017J1 takes a 19 mm watch band.

Seiko Prospex Divers SLA017J1, 19 mm lug width

Seiko · Prospex Divers

Lug width
19 mm
Case diameter
40 mm
Reference
SLA017J1
Family
Prospex Divers
Case material
Acciaio
Model
Prospex Diver SLA017J1 Stainless Steel / Black
Year
2017 - 2017

Will a strap close on your wrist?

Set for this watch: 40 mm of case and 19 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

  • 19 mm is the gap between the lugs, so a 19 mm band goes in without adapters. Whether it sits flush against a 40 mm case depends on how that case is shaped.
  • 19 mm is an odd size: most ready-made bands are made in even widths, so this reference needs one cut to measure or a band that runs in odd sizes. Why some watches take odd sizes →
  • Inside the Prospex Divers family the lug width is not one number: it runs 19, 20, 22, 24 mm. This reference is the 19 mm one, so a band bought for another Prospex Divers may not fit it. Why the size changes inside a family →
  • 19 mm is not a common size: only 1,919 of the 41,485 watches measured take it (4.6%), so ready-made choice at this width is narrower than at 20 or 22 mm. Every watch that takes 19 mm →