1971 Seiko 7017-6040 5 Sports Speed Timer “Flyback”

A masterpiece from Seiko’s Daini division, the 7017-6040 is not just a chronograph—it’s a slice of horological history. Released in 1970 as a thinner, sleeker alternative to the 6139 chronographs by Seiko’s Suwa division, the 7017 series introduced the world to its innovative flyback function, allowing the chronograph to reset without stopping.

This particular example, dated April 1971, stands out with its striking navy blue matte dial accentuated by a vibrant orange minute track and “Speed Timer” designation, a hallmark of Seiko’s racing-inspired chronographs.

The watch is a stunning example of Seiko's bold, functional aesthetics:

• The matte navy dial is surrounded by a count-up rotating inner bezel in silver and steel gray tones, adding depth and function.
• Polished, beveled baton hour and minute hands pair beautifully with the applied markers, while the blaze-orange chronograph sweep ensures legibility and flair.
• As a JDM (Japanese Domestic Market) model, the day display toggles between English and Kanji, accompanied by a polished date window frame.

The tonneau case design offers a modern yet timeless feel, with flared sides that enhance wearing comfort. The case is polished, preserving its original contours and sharp lines, complemented by the original “5 Sports” bracelet with a double-hinged block-link design.

• Brand: Seiko
• Model: 5 Sports Speed Timer Flyback
• Reference: 7017-6040
• Movement: Automatic, Caliber 7017 (Daini) with flyback function
• Case Material: Stainless steel
• Case Dimensions: 41mm diameter x 40mm length, 19mm lug width
• Crystal: Mineral crystal (NOS replacement)
• Dial: Original matte navy blue with orange minute track and Speed Timer logo
• Case Back: Screw-in stainless steel
• Bracelet: Original Seiko “5 Sports” double-hinged block link in stainless steel

• The watch is in excellent vintage condition, with all-original components.

The 7017 series marks an important chapter in Seiko’s chronograph legacy. While the 6139 often claims the spotlight as the first automatic chronograph, the 7017 series by Daini brought significant advancements, including the flyback function and a sleeker design. Its compact form and technical prowess have made it a collector’s favorite, particularly in such rare JDM variants.

• Iconic Design: The vibrant navy and orange color scheme embodies the racing spirit of the 1970s.
• Innovative Movement: The flyback function sets it apart from other chronographs of the era.
• JDM Exclusivity: The English/Kanji day display highlights its Japanese origins, making it unique among Seiko chronographs.
• Original Bracelet: Retaining the original “5 Sports” stainless steel bracelet adds immense value and authenticity.