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Grand Seiko SBGH345 Specifications

Case Material Ever brilliant steel
Case Back See-through screw ever brilliant steel
Glass Material Dual-curved sapphire crystal
Glass Coating Anti-reflective coating on inner surface
Band Material Ever brilliant steel bracelet
Bezel Material Fixed polished ever brilliant steel
Dial Color Deep scarlet red Mount Iwate texture expressing the morning sun as it falls upon the side of mountain with engraved Grand Seiko logo below the 12 o’clock position and Automatic Hi-Beat logo at 6 o’clock position
Dial Hands Tempered silver tone hour, minute, second hand with Zaratsu polished
Dial Markers Silver tone batons indexes with Zaratsu polished
Crown Screw down at 3 o’clock position
Case size Diameter 40 mm × Thickness 13.3 mm
Lug to lug 46.2 mm
Band width 19 mm
The perimeter of Band 200 mm
Clasp type Three-fold clasp with push button release


Caliber no 9S85    Instructions
Movement Type Automatic with manual winding
Power reserve Approximately 55 hours
Mean daily rate +5 to -3 seconds per day

*Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.

Normal usage accuracy +8 to -1 seconds per day
Vibrations 36,000 vibrations per hour (10 beats per second)


Functions / Specifications
Water resistance 10 bar
Magnetic resistance Equipped (4,800 A/m)
Functions Hour, minute, second hand, date window at 3 o’clock
  • 37 jewels
  • See-through screw case back
  • Screw-down crown
  • Sapphire crystal
  • Date display

Reference : Grand Seiko SBGH345G


About Grand Seiko SBGH345

Grand Seiko Mechanical Hi-Beat 36000 Heritage Collection

A mechanical watch that captivates with its scarlet color and carries forward the design of the 44GS

When the 44GS debuted in 1967, it established a unique design language known as the Grand Seiko Style. Now, a new mechanical watch presents a modernized design that inherits the uncanny ability of the 44GS to demonstrate the limitless expression that exists between light and dark. It does so while adding its own interpretation of modernity thanks, in part, to the highly precise and durable Caliber 9S85. The watch’s case and bracelet are crafted from Ever-Brilliant Steel, And within this fine case, which shimmers due to the brilliant white of the steel, we find a dial in a deep scarlet color, expressing the morning sun as it falls upon the side of Mt. Iwate.

Grand Seiko SBGH345 Features

Designed in the Grand Seiko Style, which embodies the aesthetic beauty of Japan

Grand Seiko 1967 44GS V1
*The original 44GS released in 1967


The year 1967 saw the release of the 44GS, the watch in which the design language known as Grand Seiko Style was fully realized. By modernizing this midcentury classic with a modern material, movement, and set of proportions while seeking to re-create the design elements as much as possible, we have arrived at an evolved 44GS design. This model has inherited a design befitting Grand Seiko in all aspects, from the highly legible hands and dial to the sharp angles of the case, creating a watch that takes Japanese aesthetics in a distinctively modern direction.

For details on the Grand Seiko Style


A dial that symbolizes the morning sun, the beginning of a new day

Grand Seiko SBGH345 Dial

A major inspiration for Grand Seiko is the beautiful scenery of Japan, a source that lends the company’s designs a special kind of uniqueness. The dial of this model is no different, evoking a beautiful tapestry woven by nature. Taking its inspiration from Mt. Iwate bathing in the sun’s red morning light, the dial expresses the rays falling on the majestic peak, which can be seen from the Grand Seiko Studio Shizukuishi, the home of Grand Seiko mechanical watchmaking.


Ever-Brilliant Steel features superior resistance to corrosion

Grand Seiko SBGH345 Ever-Brilliant Steel

Ever-Brilliant Steel is a stainless-steel material that shines with a brilliant white and boasts higher corrosion resistance than the stainless steel that is generally used in high-end watches. Indeed, it has the highest level of corrosion resistance of any stainless steel. The material typically finds use in harsh environments in which it is exposed to chloride, including offshore structures and chemical and food processing plants, and has been difficult to harness for use in personal accessories like wristwatches, which demand a very high degree of quality. But Grand Seiko continuously strives to innovate by making watches that one can use for a long time. So it conducted a review of its regular manufacturing processes from top to bottom and succeeded in implementing this special material for both the case and bracelet.


Caliber 9S85

Grand Seiko SBGH341 Caliber 9S85

This high-frequency mechanical movement was developed by rethinking the parts that form the foundation of the watch’s precision, granting the level of torque necessary to maintain a high oscillation rate and realizing a practical power reserve of about 55 hours when fully wound.

For details about the Caliber 9S85

  • 37 jewels
  • See-through screw case back
  • Screw-down crown
  • Sapphire crystal
  • Date display

Grand Seiko SBGH345 History

Prior to 1960, to challenge the status of Swiss watches and change the perception of Japanese watches, Daini Seikosha and Suwa began the discussion of a product line that can match the quality of Swiss watches under the suggestion of the parent company. At the time, Suwa Seikosha Co. was in charge of manufacturing men’s watches, so it was decided that Suwa would be producing the first Grand Seiko (GS).

The first Grand Seiko was released in 1960, it was based on Seiko’s previous high-end watch, CROWN. This Grand Seiko has a 25-jewel, manual-winding, 3180 caliber, and only 36,000 units were produced. This was also the first chronometer-grade watch manufactured in Japan, and it was based on Seiko’s own chronometer standard.

Design style

The design language of the Grand Seiko was set in 1967, with the creation of Grand Seiko 44GS. The 44GS set the ground for all future Grand Seiko with nine elements. These elements help improve the legibility of the watch under different situations, and create a sharp, crisp visual impression:

  1. Double width index at 12 o’clock
  2. Multi-faceted rectangular markers
  3. Highly polished bezel
  4. Highly polished planes and two-dimensional surface
  5. Half recessed crown
  6. Flat dial
  7. Multi-faceted hour and minute hands
  8. Curved side line
  9. Reverse slanted bezel wall and case side
  10. Dress style with simple but beautiful design
  11. Zaratsu polishing

source : wikipedia

Grand Seiko SBGH345 Main

Additional information

Weight 2 kg
Dimensions 5 × 4 × 2 cm

Seiko Service Center

Center Name Address Tel Fax
Seiko Service Center Jakarta Jalan Melawai IX No. 46, Blok M, Jakarta Selatan, Indonesia +62-21-7208717 +62-21-7201249
Seiko Service Center Jakarta Plaza Senayan Lt 3 No. 353-A, Jakarta Pusat, Indonesia +62-21-5725689


Seiko Service Center Jakarta Lt Dasar No. 115-116, Gd. Harco Pasar Baru, Jakarta Pusat, Indonesia +62-21-3452335
Seiko Service Center Surabaya Jalan Tunjungan No. 98-100, Surabaya, Indonesia +62-31-5474756


Seiko Service Center Surabaya Plaza Surabaya, Lt 1 No. 56-57, Surabaya, Indonesia +62-31-5316199
Seiko Service Center Medan Jalan Cirebon No. 16, Medan, Indonesia +62-61-4149636
Seiko Service Center Medan Sun Plaza Level 1, Blok C-32, Medan, Indonesia +62-61-4501505

Size Guide

Wrist circumference Suitable case sizes
5.5 in / 14 cm 34 mm 36 mm 38 mm
6.0 in / 15.2 cm 36 mm 38 mm 40 mm
6.5 in / 16.5 cm 38 mm 40 mm 42 mm
7.0 in / 17.8 cm 40 mm 42 mm 44 mm
7.5 in / 19 cm 42 mm 44 mm 46 mm
8.0 in / 20.3 cm 44 mm 46 mm 48 mm

Watch Size Guide

Water Resistance

Water Resistant Chart

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