Grand Seiko Spring Drive SBGA203

The Grand Seiko Spring Drive SBGA203 takes a 20 mm watch band.

Grand Seiko · Spring Drive

20mm

lug width

Shop 20 mm bands

Every watch that takes 20 mm →

Lug width: 20 mm
Case diameter: 41 mm
Reference: SBGA203
Family: Spring Drive
Case material: Acciaio
Model: Spring Drive Stainless Steel / Black / Bracelet
Year: 2017

Bands that fit

Cut and stitched in Milano, in the width this watch takes.

Hammered Calfskin Strap Light Blue€98

Hammered Black Calfskin Strap — Ecru Stitching€98

Red Suede Strap with Stitching — Milano Straps€90

Natural Calfskin NATO Strap€80

See every 20 mm band →

Will a strap close on your wrist?

Set for this watch: 41 mm of case and 20 mm between the lugs. Add your wrist and see where a standard strap would close.

Your wrist

Watch length, lug to lug

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.

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 41 mm case depends on how that case is shaped.
Inside the Spring Drive family the lug width is not one number: it runs 19, 20, 21, 22, 23 mm. This reference is the 20 mm one, so a band bought for another Spring Drive 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 →