Grand Seiko watches are generally available in a standard case size of around 40mm, but since becoming an independent brand in 2017, the lineup has expanded, and so have the size options. Let's consider the size that's best for you.
Watch sizes and choosing the right size for you
To wear a Grand Seiko, a luxury watch that Japan is proud of, stylishly, it is essential to choose the right size for your wrist. First, let's look at the relationship between watch and wrist size.
The horizontal diameter is indicated as the case diameter
The size of a watch is measured horizontally (from 3 o'clock to 9 o'clock) and is expressed as a case diameter of 37mm, 42mm, etc. This is only the case size and does not include the crown or pushers.
The concept of case diameter is an industry standard, and is common to many watch brands, not just Grand Seiko. Generally, a watch has a case diameter of around 40mm, with around 37mm considered small and 42mm or larger considered large.
The round cases used in Grand Seiko men's models tend to be roughly the same size vertically, but it should be noted that sporty models with rotating bezels tend to have a larger presence even if the case diameter is the same.
Choose according to your wrist width and circumference
The size of the watch is an important factor in choosing a model that fits the user's wrist naturally. A large watch on a delicate wrist or a small watch on a muscular wrist will look unbalanced and accentuate the thinness or thickness of the wrist.
For Japanese men, the standard wrist width when viewed from above is said to be around 50-70mm, with a circumference of 160-175mm. Based on this, the case diameter that fits naturally on the wrist is in the range of around 35-44mm.
This size range is almost identical to Grand Seiko's, but if you're wearing it with a suit, you should be careful not to let it interfere with your cuffs. Choose a model with an appropriate case diameter, taking into consideration not only your wrist size but also the clothing you'll be wearing.
Major Grand Seiko models with case diameters of 39mm or larger
Grand Seiko's men's models are primarily made up of watches with case diameters of 39mm or larger. Here we will introduce three main models that differ in function and design.
The SBGK007, a hand-wound model reminiscent of classic masterpieces
Manual winding (Cal. 9S63). 33 jewels. 28,800 vph. Power reserve approximately 72 hours. Stainless steel (diameter 39mm). Water resistant for everyday use. 750,000 yen (excluding tax).
The SBGK007, with a case diameter of 39mm, is a hand-wound model reminiscent of the classic Grand Seiko models of the past, with its exquisitely curved surface finish and soft coloring.
The dial, along with the sapphire crystal, forms a dome shape, and the hands, including the power reserve indicator, are gently curved thanks to the skill of the artisans.
The power reserve is approximately 72 hours (approximately 3 days), making it ideal for business people. Its standard size and good balance of function and design make it an excellent watch that is easy for many users to wear.
Equipped with an hour hand independent time difference correction function SBGP009
Quartz (Cal. 9F85). Stainless steel (diameter 40mm). Water resistant for everyday use (10 bar). Price: 28 yen (excluding tax).
The SBGP009, with a case diameter of 40mm, is a quartz model that features a time difference correction function that uses the hour hand alone, making it recommended for business people who travel abroad frequently.
The Cal. 9F85 movement has a high accuracy of ±10 seconds per year, meaning that the second hand hardly ever needs to be adjusted. When adjusting to local time, the hour hand can be moved without stopping the second hand, allowing for smart time adjustments.
Featuring an elegant champagne gold dial and three-dimensional indexes, this model will stylishly decorate your wrist no matter the occasion.
SBGJ239 equipped with caliber 9S86 with GMT function
Automatic movement (Cal. 9S86). 37 jewels. 36,000 vph. Power reserve approximately 55 hours. Stainless steel (diameter 44.2 mm). Enhanced water resistance for everyday use (20 bar). 700,000 yen (excluding tax).
The SBGJ239, with a case diameter of 44.2 mm, is an automatic model that features a 24-hour rotating bezel and a GMT hand, and can simultaneously display home time (home country time) and local time (local time).
The watch is equipped with the high-performance Cal.9S86 movement, which operates at 36,000 vibrations per hour, ensuring high accuracy when worn and with a power reserve of approximately 55 hours. It also features a color-coded 24-hour display inner ring, allowing you to check the day/night time in the second time zone at a glance.
This model is also attractive for its calm color scheme, with a green dial and crocodile leather strap.
