Grand Seiko
Spring Drive SBGA361— lug 20mm

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.

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.

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.

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.

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.