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The Story
- The modern Speedtimer 'Grand Touring' is a direct homage to Seiko’s revolutionary watchmaking history, specifically the 1969 Seiko Speedtimer (Caliber 6139), one of the world's first automatic chronographs.
- That original timepiece was born from the precision standards set by Seiko's role as the official timekeeper for the 1964 Tokyo Olympics.
- The SSC939 channels this motorsports legacy, designed explicitly under the theme of 'Classic Motorsports.'
- Its aesthetic is meant to evoke the feeling of 1970s Grand Touring cars, the vintage muscle cars that raced down endless highways.
- It modernizes this heritage by providing the legibility and functionality required by today's enthusiast, bridging a half-century of technical innovation.
Highlights
- Classic Motorsports Design: Features a striking grey sunray dial and a navy-blue Tachymeter bezel, directly inspired by the dashboards and colors of vintage muscle cars.
- Solar Powered Reliability: Utilizes Seiko’s Caliber V192 solar movement, offering the high accuracy of quartz without the need for regular battery changes—a blend of classic style and modern convenience.
- Historical Echoes: The hands and sub-dial layout pay tribute to the original 1969 design, while the integrated chronograph function connects to the era when the Speedtimer was worn by pioneering Japanese racing drivers.
- Prospex Quality: As part of the Prospex line, the watch is built to "Professional Specifications," ensuring durability, a 10 bar (100m) water resistance, and a curved sapphire crystal with anti-reflective coating.
Movement & Function
- Solar Charging: The primary power source is light energy, which charges an internal cell, eliminating the need for battery replacements.
- Chronograph: Measures up to 60 minutes of elapsed time in precise 1/5 second increments.
- 24-Hour Indicator: A sub-dial provides a running 24-hour time reference.
- Power Reserve Indicator: A dedicated function displays the current charge level of the solar cell.
- Tachymeter Scale: Printed on the bezel for calculating speed over a known distance, a quintessential feature for motorsports timing.
| Warranty | 3 years |
| Dial Colour | Grey |
| Usually For | Men |
| Movement | Quartz Solar |
| Glass | Curved Sapphire Crystal |
| Water Resistancy | 100 Metres |
| Case Width | 41.4mm |
| Case Thickness | 13.0mm |
| Case Material | Stainless-Steel |
| Band Type | Bracelet |
| Clasp Type | Three-fold clasp with push-button release |
| Accuracy | ±/-15 seconds per month |
| Calibre | V192 Solar |
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