Grand Seiko · Spring Drive

Strap for Spring Drive White Gold / White / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceSBGA361
FamilySpring Drive
MovementGrand Seiko caliber 9S68 hours, minutes, seconds
Year2017
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Spring Drive SBGA361

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Spring Drive SBGA361, seen from the bench

The Grand Seiko SBGA361 belongs to the Spring Drive collection, characterized by the 9S68 caliber that combines mechanical and quartz technology. The movement offers hours, minutes and seconds indication with the distinctive continuously sweeping seconds hand. The reference is part of the high-precision timepieces range of the Japanese brand.

Frequently asked questions

What is the lug width of the Grand Seiko Spring Drive SBGA361?

The lug width of the SBGA361 is exactly 20mm. This dimension corresponds to the attachment pins on the white gold case and determines compatibility with all aftermarket straps. To correctly verify the lug width, use a digital calliper positioned between the lug-to-lug pins, excluding the case shoulders.

What is the best aftermarket strap for the SBGA361?

For the SBGA361 we recommend a shiny black alligator strap or cognac-coloured shell cordovan. Both materials enhance the white gold 18kt case and sakura pink dial without competing visually. American alligator offers regular texture and luminous patina, while shell cordovan guarantees visible ageing and superior tactile softness.

How do you change the strap on a Grand Seiko Spring Drive SBGA361?

If the SBGA361 features the original integrated three-link bracelet, switching to straps requires removal of the white gold lugs and adaptation of the spring bar mechanism. This procedure must be performed exclusively by a specialist technician at an authorised workshop, as it carries risks of case damage and fastening mechanism deterioration.

Are the 20mm compatible straps from milanostraps.it truly compatible with the SBGA361?

Yes, all 20mm straps in the milanostraps.it catalogue are compatible with the SBGA361. Milano Straps supplies straps according to the international lug width standard, guaranteeing perfect fit to the SBGA361's lug-to-lug pins. It is also possible to customise sizing, initials and stitching thread according to personal preferences.

How long does a natural leather strap last on a watch like the SBGA361?

The lifespan of a leather strap depends on usage, frequency of wear and environment. A high-quality artisan alligator or shell cordovan strap lasts an average of 2-4 years under daily wear conditions, with regular maintenance. Milano Straps guarantees 18 months on all bespoke straps crafted at the Casati Milano atelier. Natural patina and ageing are desired characteristics, not defects.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only