Grand Seiko

Sport Automatic Spring Drive 44.2mm

Model #: sbga229

Mens Watch | Automatic Movement

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Watch Specifications

Brand Grand Seiko
Series Sport Automatic Spring Drive 44.2mm
Model Number sbga229
Size Mens
Case Material Stainless Steel
Dial Colour Black
Bracelet/Strap Stainless Steel Brushed & Polished
Clasp Push Button Deployant Buckle
Movement Automatic
Bezel Uni-Directional Rotating
Screw-down Crown Yes
Crystal Scratch Resistant Sapphire
Case Back Solid
Water Resistance 200m/660ft
Diameter 44.2mm
Case Thickness 14mm

Watch Description

Brushed & polished stainless steel case.

Uni-directional rotating bezel with black bezel ring.

Black dial.

Applied polished hour markers with luminous fill.

Brushed hands, bold hour & minute hands with luminous fill.

Date window displayed at 3 o'clock.

Power Reserve Indicator located between 7 & 8 o'clock.

Grand Seiko Spring Drive caliber 9r65:

The Spring Drive movement is for the most part mechanical, but with a electrical powered regulating mechanism resulting in an extremely accurate timepiece.

No external source of power (such as a battery) is required. The unwinding force of the mechanically wound mainspring generates a slight electrical current.

The electrical power is then used to activate & power a quartz oscillator which vibrates at 32,786 Hz & transmits a precise reference signal to the Integrated Circuit.

The IC compares the speed from the oscillator to the speed of the glide wheel (which drives the gears) and applies a magnetic brake when it detects the glide-wheel turning too fast. ◦The seconds hand moves in a continuous smooth gliding motion.

Accurate up to +/- 1 second per day.

Contains 30 jewels & has an approximate power reserve of 72 hours or 3 days.

This Watch has an alternate part number:
sbga229g

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