Seiko Super Runners S640-4000 Lap 120 Memory Digital Chronograph, Navy Blue Metallic Case, Orange Accents, 10 BAR Water Resistant, 46mm, Fully Functional


This is a serious piece of Seiko sporting history — the iconic Super Runners Lap 120 Memory digital chronograph, instantly recognizable by its bold navy blue metallic case, vivid orange and yellow pushers, and race-ready aesthetics. Whether you're a runner chasing personal bests or a vintage digital watch collector who knows exactly what they're looking at, this is a grail-level find.


Built for athletic performance, the Super Runners series was Seiko's dedicated competition running watch, offering a full-function chronograph with an impressive 120-lap memory recall — an extraordinary feature for its era. The display shows Time, Chrono, Recall, Alarm, and CH (channel) modes, all clearly labeled beneath the large, easy-to-read LCD screen. The prominent orange triangular Start/Stop and yellow round Lap/Reset buttons on the dial face are ergonomically designed for operation mid-run, even while wearing gloves. Additional orange crown pushers on the sides handle Adjust, Select, Mode, and Light functions.


The original branded black rubber strap carries the "Lap 120 Memory Super Runners" text in gold lettering on the inner band, with a perforated design on the outer face for breathability during active use. The strap is secured with a stainless steel pin buckle and reads "Seiko — Water Resist 10 Bar" on the underside, confirming its robust water resistance rating.


Case Specifications: Case diameter: 46.2mm (measured via digital caliper) Case thickness: 13.2mm Fits wrists approximately 7 inches (as shown on bracelet sizer) Water resistance: 10 BAR Series: Super Runners Lap 120 Memory


Condition: The watch is in good used condition and is fully functional — the display is clear and bright, all buttons are responsive, and the chronograph, lap, recall, alarm, and time functions are all operating correctly. The navy blue metallic bezel shows minor surface wear and some light scuffs consistent with previous use. The orange and yellow buttons retain their vibrant color with no fading. The rubber strap shows light surface marks but holds its shape well with no cracking or delamination. The gold "Super Runners" lettering on the strap is still largely legible. Overall, this is a strong, wearable example of one of Seiko's most collectible running watch series.


Special Note: Every watch that I list on eBay has been photographed extensively and been videoed. This means that once the watch leaves my warehouse, it is in the same identical shape as described in the listing. All listings are AS-IS. I will not take back a watch and return especially one that has been tampered with previously. If you choose to go this route, you will face overwhelming proof on my side that the watch was in the shape as described in the description and eBay will be notified promptly to help resolve the issue.


Shipping is same day or next day. Don't miss your chance to own one of Seiko's most distinctive and sought-after vintage running watches — the Super Runners rarely shows up in this condition.


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