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Grand Seiko Heritage Collection 37mm Mens Watch Blue
Ref. SBGH347
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Stepping up in Grand Seiko's range
The SBGH347 draws its dial from the icefalls of Mt. Iwate — the mountain that stands directly above the Studio Shizukuishi where every part of this watch is made. When winter temperatures drop far enough, the falls freeze mid-flow into layered, translucent formations, and the textured blue-white surface of this dial captures that particular quality of suspended movement in ice. It is a landscape Grand Seiko can see from the building, which gives the reference a specificity that distinguishes it from the broader seasonal dial series. Aesthetically it traces back to the SBGR001 of 1998, the watch that launched the mechanical 9S line, carrying forward that original case architecture in Ever-Brilliant Steel — a proprietary alloy that polishes to a brighter, colder white than standard steel and resists corrosion substantially better. The 9S85 inside is built and regulated at Shizukuishi to a tolerance of +5 to -3 seconds per day, running at 36,000 vibrations per hour — a beat rate that reduces the interval between ticks enough to smooth out positional error and give the seconds hand the near-continuous sweep the movement is known for. At 37mm with a 44.6mm lug-to-lug span it sits within the classic dress-watch footprint, and while 13.3mm is not shallow, the curved case profile distributes that depth against the wrist rather than projecting it outward. The hands and indices are diamond-cut rather than lume-filled, prioritising the way faceted surfaces catch and redirect available light over painted visibility in darkness — a choice that reads as entirely consistent with what this watch is trying to be.
- Reference
- SBGH347
- Brand
- Grand Seiko
- Collection
- Heritage CollectionCase Size: 37
- Case size
- 37mm
- Case thickness
- 13.3mm
- Lug width
- 19mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Blue
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- 9S85
- Functions
- Date
- Water resistance
- 100m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Three-fold clasp
- Lume
- Luminous
- Retailer
- Mappin & Webb
Additional specifications
- Lug-to-lug
- 44.6mm
- Power reserve
- 55 hours
Learn more about Grand Seiko
Grand Seiko began in 1960 as Seiko's attempt to build a watch to the highest standard in the world, judged against Swiss chronometer criteria rather than Japanese ones. The first model met the Bureaux Officiels standard, and the ambition was explicit: not a good Japanese watch, but a better watch than the Swiss were making.
The 1967 Grammar of Design, laid down by Taro Tanaka, still governs the aesthetic. Flat surfaces and sharp facets rather than curves; hands and markers cut to catch light in defined planes; every surface either mirror-polished or perfectly flat, with no in-between. The polishing is done by hand on tin plates — Zaratsu — which produces distortion-free reflections and cannot be replicated by machine.
The precision case was made at observatory trials in the 1960s, where Grand Seiko movements placed among the leaders in Geneva and Neuchâtel before the competitions ended.
The house's distinctive technology is Spring Drive, introduced in 1999 after nearly three decades of development. A conventional mainspring drives the watch, but the escapement is replaced by an electromagnetic brake regulated by a quartz oscillator: mechanical power, quartz accuracy, and a seconds hand that sweeps without ticking at all.
Grand Seiko was separated into a standalone brand internationally in 2017, with dials frequently drawn from Japanese landscape — the Snowflake among the best known.
- 1960
- The first Grand Seiko is built to Swiss chronometer standards.
- 1967
- Taro Tanaka codifies the Grammar of Design.
- 1968
- The 61GS Hi-Beat reaches 36,000 vibrations per hour.
- 1999
- Spring Drive combines mechanical power with quartz regulation.
- 2017
- Established as an independent brand worldwide.
Also in 3 collections
This watch appears in Stainless Steel Watches (2,846), Automatic Watches (1,468) and Blue Dial Watches (776).
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 100m water resistance covers swimming and watersports
- 37mm suits most wrists
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | SBGH347 | 16.3200.670/01.C831 | AB01761A1K1X1 |
|---|---|---|---|
| Price | £6,300 | £7,000 | £5,950 |
| Case size | 37mm | 36mm | 41mm |
| Water resistance | 100m | 50m | 100m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Leather strap | Leather strap |
| Power reserve | 55 hours | 50 hours | 70 hours |
| This watch |
|
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 100m it is rated for swimming and snorkelling, though not for diving.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
How long does it run for when it's not worn?
About 55 hours fully wound — enough to survive a night off the wrist, but not a full weekend.
What size strap does it take?
19mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 44.6mm, which suits wrists from roughly 16cm (6¼ inches) upward.
Lug-to-lug decides fit more than case diameter does.
Is it a men's or women's watch?
Listed as men's, though at 37mm it sits in the range that suits anyone.
Cheapest place to buy
Mappin & Webb is the only UK retailer we track stocking this reference new, at £6,300. There is nothing to compare it against today.
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