

ABOUT THIS BRAND
Grand Seiko released its first watch in 1960, challenging the perception that the Swiss were the undisputed masters of fine watchmaking. In the nearly 60 years since the first Grand Seiko, the company has become known the world over for producing some of the most elegantly designed timepieces in the world while developing innovative technologies such as Spring Drive. Even while maintaining its high quality standards, it delivers tons of value in its watches, making it popular with collectors at all levels. In 2017, Grand Seiko became its own brand within Seiko’s expansive watchmaking portfolio.
Product Description
It is the first Grand Seiko equipped with a third mechanism "Spring Drive" that enables the same high precision as a quartz watch while using the mainspring used for mechanical watches as a power source, and has been supported for a long time since its release. It is a standard model of Spring Drive.
The movement of the second hand, which is different from mechanical and quartz, is a sweeping hand that flows smoothly over the dial.
The maximum winding duration is about 72 hours (about 3 days), and you can check the remaining operating amount on the power reserve display at the bottom left.
The silver dial, which changes its expression depending on the amount of light, and the multi-faceted hands and indexes, create a simple and standard expression that will not get tired of being used for many years.
The back lid is a see-through back, so you can enjoy watching the movement as it spins.
Product specification
- Exterior: Stainless steel back lid: stainless steel and sapphire glass
- Glass material: Dual curve sapphire
- Coating: Anti-reflective coating on the inside
- Case size: Width 41mm x Thickness 12.5mm
- Arm circumference (longest): 195mm
- Nakadome: One-push three-fold method
- Movement
- Movement: 9R659R65 Instruction Manual
- Drive system : Spring drive
- Drive time: Maximum winding time lasts about 72 hours (about 3 days)
- accuracy : Average monthly difference ± 15 seconds (equivalent to daily difference ± 1 second)
- function
- waterproof : Enhanced water resistance for daily life (10 bar)
- Magnetic resistance: can be
- weight : 150.0 g
- others :
- ・ See-through back
- ・ Screw lock type crown
- ・ With calendar (date) function
- ・ 30 stones
- ・ Second hand stop function
- ・ Power reserve display function
- ・ With the back lid lion coat of arms
- ・ Screw back (There are individual differences in the orientation of the back cover due to manufacturing reasons)
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