Grand Seiko · Spring Drive

Strap for Spring Drive GMT Stainless Steel / Black / 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 diameter44 mm
ReferenceSBGE201
FamilySpring Drive
MovementGrand Seiko caliber 9R66 Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable) | Date | Power Reserve Indicator
CaseStainless Steel

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 SBGE201

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Spring Drive SBGE201, seen from the bench

The Grand Seiko Spring Drive SBGE201 is powered by the 9R66 caliber with hours, minutes, seconds, adjustable GMT hand and power reserve indicator. The Spring Drive movement combines the precision of quartz with the fluidity of the automatic mechanical. The watch features a date function and a dedicated fourth hand for the second time zone.

Frequently asked questions

What is the lug width of the Grand Seiko Spring Drive SBGE201?

The lug width of the SBGE201 is 20mm, measured between the inner shoulders of both lugs. This specification allows fitting any standard 20mm strap without requiring custom lugs. To verify correct measurement, place a ruler between the inner bases of each lug, perpendicular to the case body.

Which strap is best for the Grand Seiko SBGE201?

There is no single 'best' choice, but three primary options: African alligator for formal elegance (regular grain, 1.4-1.6mm thickness), vegetable-tanned calf for patina that improves with time, and shell cordovan for legendary durability and colouration that naturally darkens. Selection depends on intended use and aesthetic preference relative to the 'Mt. Iwate' dial.

How do you change the strap on the Grand Seiko Spring Drive SBGE201?

The SBGE201 is equipped with an integrated bracelet, not straight lugs. To replace it, remove the entire bracelet via locking bars (spring bars) concealed at 12 and 6 o'clock. Use a dedicated tool (spring bar remover) to gently release the bars, then slide the bracelet away. A new 20mm strap can be mounted by inserting the bars into the forward lug holes.

What is the difference between an original Grand Seiko strap and an aftermarket 20mm strap?

The original SBGE201 bracelet is Zaratsu-polished stainless steel integrated into the case, offering durability and aesthetic coherence. An aftermarket 20mm leather or rubber strap offers versatility, customisation, and seasonal alternatives. Quality depends on material selection (certified alligator, European calf, shell cordovan) and artisanal execution. Milano Straps straps guarantee reinforced stitching and millimetre-precise finishing.

How long does a leather strap last on the SBGE201?

Lifespan depends on leather quality and use frequency. Well-maintained alligator or shell cordovan lasts 5-8 years with daily wear. Vegetable-tanned calf, being softer, has an average lifespan of 4-6 years. Leather perspires during physical activity, so alternating straps and allowing complete drying between use periods is advisable. Milano Straps offers 18-month warranty on bespoke straps, covering manufacturing 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