Seiko Quartz Stopwatch TJR010 Ref. 7A07-0010
What makes a collector's item truly valuable is not merely what it is, but how little the passage of time has affected it. The Seiko TJR010 Ref. 7A07-0010 is a genuine NOS (New Old Stock) example, manufactured in June 1983 and preserved unused for over forty years. It remains complete with its original Seiko box, carrying lanyard, Japanese instruction manual, period-correct ¥18,000 price tag, and even the factory protective film on the case back.
**IMPORTANT NOTE: As this item ships from within the European Union, you will not be liable for customs duties within the EU.**
The serial number 367138 on the case back indicates a production date of June 1983. This era coincided with the years when Seiko pioneered analog quartz chronograph technology. The Calibre 7A07A used in the TJR010 brings that same engineering philosophy to a professional handheld stopwatch, delivering quartz precision that is read via fully analog hands rather than a digital display.
The stainless steel case, with a diameter of approximately 54.2 mm, is compact enough for comfortable handheld use, while the dial is generously sized to allow measurements to be read at a glance. The white background, bold black scale, and slender black hands give the device an aesthetic as functional as that of laboratory equipment. Three large controls at the top directly manage the SPLIT, 0-RESET, and START-STOP functions, while a LOCK control at the bottom right prevents accidental inputs during timing. The Calibre 7A07A movement inside is a quartz caliber that Seiko’s technical documentation from the era rated for an accuracy of better than ±20 seconds per month and a battery life of approximately two years under normal use. With features such as split-time, cumulative time, and various reset/measurement functions, the TJR010 was not merely a simple stopwatch but a highly advanced professional timing instrument for its time.
What makes this particular example truly extraordinary, however, is its state of preservation. The scratches and marks visible on the caseback in the photos are not on the steel itself; they are on the surface of the blue factory protective film, which has remained undisturbed for over forty years. The watch remains in unused condition, and the original ¥18,000 price tag still accompanies it, preserving Seiko’s retail identity from that era.
Final Thoughts
There is a delightful irony in a device built to measure the seconds of others surviving for over forty years without ever having its own operational life begin. This TJR010 is not just a vintage Seiko stopwatch; it is a small time capsule that brings the analog quartz technology of 1983—complete with its box, tag, and factory protective film—into the present day.
The product shown here was manufactured in 1983
PROFESSIONALLY FULLY SERVICED.
The watch movement has been completely disassembled; every part has been cleaned, lubricated, and precisely adjusted to ensure flawless operation. (Requires no maintenance for three years, provided it is not exposed to adverse conditions.)
Product Condition: Tested; all functions are fully operational.
