Grand Seiko Heritage Collection - 40mm - Black

This Grand Seiko Heritage Collection model has a power reserve of approximately 55 hours when fully wound.

Yes, the bracelet is typically adjustable by a watchmaker or jeweler to fit your wrist size precisely. It usually involves removing or adding links.

'Hi-Beat 36000' refers to the movement's operating frequency of 36,000 vibrations per hour (10 beats per second). This high frequency contributes to the watch's exceptional accuracy.

With a water resistance of 10 bar (100 meters), the watch is suitable for swimming and showering. However, avoid diving or prolonged submersion in water, and always ensure the crown is securely tightened.

It is generally recommended to have a mechanical watch like this serviced by an authorized professional every 3 to 5 years to maintain its performance and accuracy.

The case is made of Ever Brilliant Steel, a special stainless steel alloy that offers superior corrosion resistance and brilliance compared to standard stainless steel used in luxury watches.

The black dial features a pattern inspired by the Mt. Iwate mountain range, a significant natural landmark visible from the Grand Seiko studio in Japan, reflecting the brand's aesthetic heritage.

Manually wind the crown clockwise until firm resistance is felt. Ensure the watch is worn regularly for the automatic winding mechanism to function.

Confirm the watch is sufficiently wound. If the issue persists and accuracy deviates significantly from the specified +/- 5 seconds per day, it may require servicing. Magnetic fields can also affect accuracy; avoid prolonged exposure to strong magnets.

Refer to the manual for the correct procedure to set the GMT hand independently. If issues persist, consult an authorized Grand Seiko service center.

Ensure the crown is pulled out to the correct position for setting. If it feels stiff or difficult to turn, do not force it. Clean around the crown and consider professional servicing.