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Seiko Prospex Speedtimer 1/100 Second Solar Chronograph

SKU: SFJ009 

  • $1,050.00
  • $700.00 Save $350

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Celebrating 110 years of fine watchmaking

On the eve of the 2023 World Athletics Championships in Budapest, Hungary, Seiko is rolling out a new sports-timing calibre in its latest Solar Speedtimer. Called Calibre 8A50, this 1/100th of a second chronograph is capable of timing multiple sporting events (ie: multiple lap times) with incredible precision and accuracy. And in keeping with Seiko's rich history of timing sporting events, this distinctive Speedtimer is built around four timekeeping displays (two 1/100 totalizers at 3H and 9H, and a 60 second totalizer at 12H), a tribute of sorts to Seiko's vintage Sportura models, like the Kinetic-powered SBCG001. Like the rest of Seiko's Solar-powered movements, this Speedtimer can run autonomously for approximately six months when fully charged, and maintains an accuracy rating of ±15 seconds per month. 


  • Case: 42mm stainless steel (12.9mm thick, 48mm L2L)
  • Caliber Number: 8A50
  • Movement Type: Solar chronograph with additional 1/100 second totalizer
  • Functions: Chronograph up to 60 minutes in 1/100 second increments, overcharge prevention function
  • Accuracy: ±15 seconds per month
  • Duration: Operating for approx. 6 months (when fully charged)
  • Crystal: Curved sapphire crystal
  • LumiBrite: LumiBrite on hands and indexes
  • Clasp: Three-fold clasp with push button release
  • Includes additional leather strap with stainless steel folding clasp
  • Water Resistance: 10 bar (100 meters)
  • Limited Edition: 3,500 pieces

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