SRQ057J1
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SRQ057J1
The Seiko Prospex Speedtimer SRQ057J1 is a highly collectible, premium mechanical chronograph created from a historic motorsport collaboration. It’s a tribute model to Seiko’s official race backing of the iconic Datsun 240Z Safari rally car that took on the grueling 6,200km East African Safari Rally in 1971. This special timepiece is a blend of precision vintage rally styling and modern vertical-clutch mechanics with only 500 pieces worldwide.
Key Product Highlights
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Historic Datsun 240Z Theme: The matte black dial, tachymeter bezel, and overall aesthetic are meticulously modeled after the original dashboard instruments of the 1971 safari rally car, complete with signature blue and red racing accents.
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Exclusive Branding Details: Features the classic Datsun cursive script logo proudly displayed at the 6 o’clock dial position, on the strap clasp, and prominently stamped onto the case back alongside its individual limited-edition serial number.
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Elite Chronograph Caliber 8R48: Driven by a high-grade in-house column wheel and vertical clutch mechanical movement, ensuring smooth, stutter-free startup for the sweeping stopwatch hand and excellent long-term durability.
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Premium Stealth Architecture: Constructed from stainless steel treated with a hard black coating for a rugged, non-reflective tactical finish. It comes paired with a premium black cowhide leather strap sourced from an LWG-certified tannery.
Technical Specifications
| Component | Specification |
| Brand / Collection | Seiko Prospex (SPEEDTIMER Series) |
| Reference Number | SRQ057J1 (SRQ057 / Japanese Ref: SBEC029) |
| Exclusivity | Limited Edition of 500 pieces worldwide |
| Movement Caliber | Seiko Manufacture Caliber 8R48 (Mechanical Automatic) |
| Chronograph Architecture | Column Wheel & Vertical Clutch mechanism |
| Frequency / Jewels | 28,800 vibrations per hour (8 beats per second) / 34 Jewels |
| Power Reserve | Approx. 45 hours |
| Stated Accuracy | +25 to -15 seconds per day |
| Case Material | Stainless steel with a matte black hard coating |
| Case Dimensions | Diameter: 42.0mm |
| Lug Width | 20mm |
| Crystal | Dual-curved Sapphire Crystal with anti-reflective inner coating |
| Luminescence | Beige retro-style LumiBrite on hands and applied indices |
| Water / Magnetic Resistance | 10 bar (100 meters / 330 feet) / 4,800 A/m |
| Strap / Clasp | Premium black leather with a tri-fold push-button release clasp |
| Complications | 12-hour chronograph (9 o’clock 30-min counter, 6 o’clock 12-hour counter), date display |
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