Grand Seiko Heritage Quartz

MPN: SBGP003DNU

Bringing together technical excellence and elegant sophistication, the Grand Seiko Heritage collection features a stunning range of long-cherished watches that are perfect for every occasion.

Exterior
Case Material : Stainless steel
Glass Material : Dual-curved sapphire crystal
Glass Coating : Anti-reflective coating on inner surface
Case size : Diameter 40mm × Thickness 11.1mm
Clasp type : Three-fold clasp with push button release

Functions
Water resistance : 10 bar
Magnetic resistance : Equipped
Weight : 142.0 g

Other details/Features:
Calendar-linked time difference adjustment function
Case back with lion emblem
Date display
Screw case back

Calibre 9F85:

Caliber 9F85 has a time difference adjustment function that allows the hour hand to be adjusted without stopping the seconds hand and thus preserving its high precision when the wearer changes time zones.

A quartz movement depends on a battery as a power source. The battery sends electricity to a quartz oscillator, which vibrates at precisely 32,768 times per second. An integrated circuit (IC) detects these vibrations and sends out an accurate time signal every second to the step motor. The step motor activates in accordance with this time signal, accurately rotating a series of gears and the watch hands.

Accuracy
+10 seconds per year

Battery life
Approximately 3 years

Features
- Instant date change mechanism
- Quick correction fucntion of time difference adjusting to a calendar