Watch Specifications
Maker
GRAND SEIKO
Movement
4J51 Instruction Manual
Accuracy range
Annual difference ?¨¤ 15 seconds
Dial
Light Grey Color
Luminous
Anti-reflective coating on the inside
Case
Bright titanium, ceramics and sapphire glass
Crown type
Screw back/ Screw lock type crown
Lug width
About 27.6 mm
Crystal material
Box type sapphire
Strap
Silver Color
Water resistance
Water resistant to 10 bar
Dimensions
Case size (width x thickness): 40 x 12.8 mm
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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
?Grand Seiko Heritage Collection SBGA445 Spring drive watch
Product specification
- ?Exterior
- Glass material: Box type sapphire
- Coating: Anti-reflective coating on the inside
- Case size: Width 40mm x Thickness 12.8mm
- Nakadome: One-push three-fold method
- 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
- others :
- ? See-through back
- ? Screw back
- ? Screw lock type crown
- ? With calendar (date) function
- ? 30 stones
- ? Second hand stop function
- ? Metal allergy resistance
- ? Power reserve display function
- ? With the back lid lion coat of arms
