Seiko 7A48-702A - Golden Time, Carrying the Cycle of the Moon on Your Wrist!
One of the most sophisticated designs of the mid-1980s, when Seiko combined the quartz revolution with aesthetic elegance, was the Seiko 7A48-702A. Built on the brand's legendary 7A series chronograph movement, this model stands out not only for its precise timekeeping but also for its moonphase complication.
At the time, Seiko competed head-to-head with its Swiss rivals, combining technological superiority with elegant classic forms. This gold-toned version perfectly reflects both the spirit of the era and the fine craftsmanship of Japanese engineering.
Movement
Caliber: Seiko Cal. 7A48
Type: Quartz (analog chronograph + moonphase)
Functions:
Hour, minute, second
Chronograph (60-second, 30-minute, 1/10-second sub-displays)
Date display
Moonphase indicator (at 12 o'clock)
Number of jewels: 15 jewels
Battery life: Approximately 3 years
Accuracy: ±15 sec/month
The 7A48 caliber is the "moonphase" variant of the Seiko 7A series, among the world's first quartz movements with an analog chronograph function.
All displays are driven by a true mechanical gear system, not a digital circuit—making it one of the few quartz chronographs with a classic mechanical feel.
Case and Glass
Reference No: 7A48-702A
Case Diameter: 36.8 mm
Thickness: ~9 mm
Material: Gold-plated (SGP) case, stainless steel case back
Glass: Domed mineral crystal
Dial: Gold-tone guilloché pattern, symmetrical arrangement of three subdials, navy blue moon phase disc
Strap: New leather strap (with Seiko box)
The dial's textured surface and gold-tone subdials create an elegant depth that plays with light.
The moon phase window at 12 o'clock completes the watch's essence with a golden moon figure against a deep navy blue sky.
Case Back and Engraving
The inscription "Seiko - Water Resistant - Japan A – 7A48-702A" is clearly visible on the case back.
According to the model's production code, the watch was manufactured in January 1984.
Design Details
A classic Roman numeral hour ring adds a sophisticated touch to the dial.
The slender gold hands are designed in perfect proportion with the subdials.
The softly transitioning domed glass remains true to the elegant profile of vintage watches.
The warm tone of the gold-plated case contrasts with the dark blue moon phase disc.
Collectible Value and Rarity
Seiko's 7A48 series is considered by collectors today to be the "pinnacle of quartz engineering."
This model is one of the few examples preserved with its original box and excellent condition.
The full gold-tone dial and subdials are a rare variant in the 7A48 series.
Both technologically and aesthetically, it is one of the rare models where Seiko takes the quartz revolution to an artistic level.
Final Word
The Seiko 7A48-702A is a watch that does more than just measure time—it is a Japanese masterpiece that carries the sky on its wrist.
It combines the cycle of the moon, time, and the elegance of engineering in a single bezel.
Shining with retro 1980s gold tones, this model is a unique piece that will appeal to both classic enthusiasts and technical enthusiasts.
The item you are viewing was manufactured in 1984.
Professionally overhauled and FULLY SERVICED (the movement is completely disassembled, its components are cleaned, oiled, and adjusted), your watch will function flawlessly without any surprises. (Maintenance-free for 3 years unless exposed to direct water or high humidity for extended periods.)
Item Condition: Tested and fully functional.
