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Seiko - Brand New

Seiko Prospex Speedtimer Solar Chronograph - SFJ007

  • Limited edition
  • Solar chronograph
  • 42 mm case
Sale price $855.00
Regular price $950.00
Sale

About this timepiece

Built to honor world-class athletics, the Seiko Prospex Speedtimer Solar Chronograph (ref. SFJ007) is a proud commemorative edition of just 4,000 pieces marking the World Athletics Championship Budapest 2023, where Seiko served as official timer. Its black dial carries a pattern that evokes the surface of a professional running track, and gold chronograph hands stand for the top prize in athletics. Four inset black subdials give the time its own dial, apart from the chronograph counters, and LumiBrite on the hands and markers keeps everything legible in low light.

At its heart is Seiko's solar chronograph caliber 8A50, which can time events lasting up to an hour, to the nearest 1/100 of a second, and includes a split time function. It charges from any light source and never needs a battery change, running for six months once fully charged, while concave-topped, hammer-shaped pushers make the stopwatch easy to operate. The 42mm stainless steel case and bracelet wear a black hard coating, with a curved sapphire crystal carrying an anti-reflective coating on its inner surface. The screw-down case back bears the production serial number along with the Budapest Championship logo, and with 100 meters of water resistance and a tri-fold push-button clasp, this is a rugged collector's chronograph.

Features

  • Budapest 2023 limited edition – one of 4,000, with serial number and Championship logo on the case back.
  • Solar caliber 8A50 – charges from any light, with a six-month reserve and no battery changes.
  • 1/100-second chronograph – times up to 60 minutes with a split time function.
  • Running-track dial – patterned black dial with four inset subdials and gold chronograph hands.
  • Black hard coating – applied to both the stainless steel case and the matching bracelet.

Specifications

  • Reference: SFJ007
  • Collection: Prospex Speedtimer Solar Chronograph
  • Gender: Men's
  • Movement: Solar chronograph
  • Caliber: 8A50
  • Power Source: Powered by light energy, no battery change required
  • Power Reserve: 6-month power reserve once fully charged
  • Functions: Chronograph measuring up to 60 minutes of elapsed time in 1/100-second increments, split time function
  • Case Material: Stainless steel case with black hard coating
  • Diameter: 42 mm
  • Thickness: 12.91 mm
  • Length: 48.27 mm
  • Lug Width: 20 mm
  • Dial Color: Black (patterned, with four inset black subdials)
  • Crystal Material: Curved sapphire crystal with anti-reflective coating on the inner surface
  • LumiBrite: LumiBrite hands and markers
  • Strap: Stainless steel bracelet with black hard coating
  • Clasp: Tri-fold push button release clasp
  • Water Resistance: 10 bar, 100 meters (330 feet)
  • Pushers: Concave top hammer-shaped pushers
  • Case Back: Screwdown caseback engraved with production serial number and Budapest Championship logo
  • Limited Edition: World Athletics Championship Budapest 2023 Limited Edition of 4,000

Timepiece History

Seiko's story began in 1881, when a 21-year-old entrepreneur, Kintaro Hattori, opened a shop selling and repairing watches and clocks in central Tokyo. The first watch to carry the Seiko name followed in 1924, and Seiko went on to introduce a long line of watchmaking firsts, including the Quartz Astron, the world's first quartz wristwatch, on December 25, 1969. In 2024, Seiko celebrated the 100th anniversary of the Seiko brand.

The SFJ007 is part of the Prospex Speedtimer series, inspired by Seiko's long tradition in sports timing. In the 1960s, Seiko built high-precision stopwatches around its innovative heart-shaped cam mechanism, including a 1/100-second stopwatch that served as an official timing device at the world sporting event held in Tokyo in 1964, and in 1969 Seiko introduced the Speedtimer with Caliber 6139, the first automatic chronograph with a column wheel and vertical clutch. Its design takes inspiration from Seiko's first analog quartz chronograph, which was also the world's first and had a 1/100-second stopwatch.

  • Only 2 left in stock

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