Strap for Automatic Hi-Beat 36000 Professional 600 m Diver's Titanium / Blue / Bracelet / Limited Edition

The lug width of the Grand Seiko SBGH257 is 20mm. This measurement represents the distance between the two lugs of the case where the strap is inserted. It is essential to measure this dimension accurately before ordering an aftermarket strap, using a digital or mechanical calliper positioned between the inner rings of the lugs.

For the SBGH257 in titanium, alligator is the ideal choice due to its natural texture and ability to dialogue with the satin-finished case. Honey or cognac alligator amplifies the warmth of the greyish case whilst maintaining formal elegance. Valid alternatives include vegetable-tanned calf for those who appreciate colour evolution over time, and shell cordovan for those seeking lasting durability and natural polished patina.

To change the strap, you need to remove the pins present in the lateral lugs of the case. Use a dedicated tool (spring bar tool) to compress the internal spring of the pin and slide it out of the seats. Once the previous strap is removed, insert the pins of the new strap by aligning them with the lug grooves and press them until they lock completely. Ensure both sides are securely fastened before wearing the watch.

Yes, any strap with a 20mm lug width is compatible with the Grand Seiko SBGH257. It is essential to choose straps of construction quality equivalent to that of the watch, made from full-grain leather, vulcanised rubber or technical textiles. Bespoke personalised straps also offer the choice of thickness and stitching finish for perfect aesthetic integration with the titanium case.

The lifespan of a leather strap varies according to material and use. Alligator or vegetable-tanned calf, with daily care (drying after water contact, protection from excessive perspiration), lasts an average of 3-5 years. Shell cordovan, thanks to greater density, reaches 5-7 years. A vulcanised rubber strap has indefinite durability from an aesthetic point of view but may require periodic cleaning. Casati Milano offers an 18-month warranty on all custom straps created in the atelier.