Grand Seiko · Mechanical

Strap for Automatic Hi Beat 36000 GMT Special Pink Gold / Silver / Strap

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
ReferenceSBGJ210
FamilyMechanical
MovementGrand Seiko caliber 9S86 Hours, Minutes, Additional 24 Hour Hand (adjustable), Seconds | Date
CasePink 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 Mechanical SBGJ210

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Mechanical SBGJ210, seen from the bench

The Grand Seiko SBGJ210 is powered by the automatic mechanical caliber 9S86 with a GMT function via an adjustable 24-hour hand and date indication. The movement offers hours, minutes, seconds and an additional time zone display. The reference belongs to the Mechanical collection of the Japanese brand.

Frequently asked questions

What is the lug width of the Grand Seiko Mechanical SBGJ210?

The Grand Seiko SBGJ210 requires a strap with a 20-millimetre lug width. This measurement is taken from the internal base of one lug to the other, ensuring perfect compatibility with the watch's integrated lug system on the rose gold case.

Which strap is recommended for the Grand Seiko SBGJ210?

For the rose gold SBGJ210, we recommend alligator leather in dark brown or cognac tones, which naturally harmonises with the warmth of the metal and develops an elegant patina over time. Shell cordovan offers an alternative for those seeking exceptional durability (up to 30 years), whilst vegetable-tanned leather provides a more casual approach without aesthetic compromise.

How do I change the strap on the Grand Seiko SBGJ210?

The SBGJ210 features an integrated, monolithic lug system. To change the strap, you must remove the old one using a specialised tool (spring bar tool or dedicated tweezers) that pushes the lateral retention pins, allowing the deployante to be extracted. The operation requires care to avoid scratching the case. If you are inexperienced, we recommend professional assistance.

Can I use an aftermarket strap compatible with the Grand Seiko SBGJ210?

Yes, any strap with a 20-millimetre lug width is compatible with the SBGJ210. Verify that the width precisely matches 20mm (measured internally) and that the deployante suits the watch's integrated lug system. Milano Straps' artisanal straps are specifically crafted to meet this dimensional tolerance.

How long does a leather strap last on the Grand Seiko SBGJ210?

An alligator or vegetable-tanned leather strap has an average lifespan of 5-8 years with daily use and regular maintenance (periodic cleaning, protection from excessive moisture). Shell cordovan, owing to its denser fibrous structure, can last up to 30 years. The standard guarantee offered by Milano Straps on all bespoke straps is 18 months.

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.

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