Year of Manufacture / Movement
2003
Ref. 8J56-8000
5-Jewel Cal. 8J56A Quartz Movement

Features & Selling Points
"Powered by the Legendary 8J Caliber – Grand Seiko's Pursuit of Absolute Precision."

Presented here is the Grand Seiko 8J56-8000, a highly practical and exceptionally accurate quartz model from Grand Seiko's renowned 8J series. Equipped with the compact and slim Cal. 8J56A movement, this watch exemplifies Grand Seiko's philosophy of combining outstanding precision, durability, and timeless design.

The 8J series is celebrated for its impressive annual accuracy rating of ±10 seconds per year, making it one of the most respected quartz calibers ever produced by Grand Seiko. Beyond its remarkable precision, the movement was engineered for long-term reliability and everyday practicality.

This particular example was manufactured in 2003 and features a textured black dial with an embossed pattern that adds depth and visual interest. A date display is positioned at 3 o'clock, while the hands and hour markers are fitted with luminous material to enhance legibility in low-light conditions.

One of the watch's most distinctive features is its iconic dodecagonal (12-sided) bezel, a design element that gives the case a strong and purposeful character. Measuring approximately 38 mm in diameter and 10 mm in thickness, the watch offers excellent wrist presence while maintaining comfortable wearability. Details such as the GS-signed screw-down crown and the Grand Seiko lion medallion on the screw-back case further highlight the model's premium craftsmanship.

Powering the watch is the highly stable 5-jewel Cal. 8J56A quartz movement, while the watch is fitted with its original one-touch stainless steel bracelet, providing both secure wear and convenient operation.

With its robust construction, outstanding precision, and versatile styling, this Grand Seiko is equally at home in professional business environments and active daily use, making it an ideal companion for those who appreciate functional luxury.

Condition

Dial

• No significant visible damage.

• The hands and indices show no signs of rust or corrosion.

• Minor scratches are visible on the applied SEIKO logo.

Case & Case Back

• Light scratches, minor dents, wear marks, dirt, and case-opening tool marks are present.

Crystal

• No significant scratches or noticeable blemishes.

Bracelet

• Original bracelet with GS-signed clasp.

• Shows light scratches, minor wear, and dirt accumulation consistent with age and use.

• Remains fully wearable.

Operation

The crown is located on the right side of the case and features a screw-down construction.

• Unscrew the crown before performing adjustments.

First Crown Position

• Independently adjusts the hour hand for time-zone correction.

• Also used for quick-set date adjustment.

Second Crown Position

• Used for setting the time.

After adjustment, press the crown inward while turning it clockwise to securely screw it back into the case. To maintain water resistance, the crown should always remain fully screwed down during normal use.

Accuracy & Dimensions

• Quartz movement functioning properly.

• Annual accuracy specification: approximately ±10 seconds per year.

Measurements

• Case diameter: approximately 38 mm (including crown guards)

• Case length: approximately 43 mm

• Thickness: approximately 10 mm

• Lug width: 19 mm

• Current wrist size: approximately 20 cm

All measurements are approximate.