Grand Seiko Sport Black 9F Quartz GMT SBGN003

Always ready for action, the Grand Seiko Sport collection blurs the lines between function and form, allowing you to keep track of time, no matter where your next adventure takes you.

Presented on a sophisticated stainless steel bracelet, this Sport timepiece features a highly durable 39mm stainless steel case, which plays host to a striking black dial.

Protected by sapphire crystal glass, the dial is equipped with a date display window at 3 o’clock and silver-toned hands and hour markers with a luminescent coating for optimal visibility.

Driven by a Quartz caliber 9F86, this confident time accessory is water resistant up to 100 meters and is equipped with magnetic radiance for maximum functionality.

Calibre 9F86:

Offering the same functionality as the standard Calibre 9F82, Calibre 9F86 is equipped with the first GMT function of Grand Seiko.

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
- Dual time function with 24-hour hand
- Quick correction function of time difference adjusting to a calendar