Seiko Prospex Speedtimer Mechanical Chronograph SRQ045 – Pre-Owned

Available only in a limited production run of 600 pieces with serial numbers engraved on each caseback.

Offered as pre-owned, this watch is in unworn condition. Fully inspected and backed by a full warranty, it delivers like-new quality with the value of a secondary-market purchase.

This item does not have its original box but will come with papers.

Precision Heritage Meets Stealth Aesthetics

Celebrate the rich legacy of Seiko’s professional sports timing with the striking, full-black Seiko Prospex Speedtimer SRQ045. As a pre-owned offering, this timepiece brings the elite engineering of Seiko's high-end mechanical chronographs to your collection with a distinct, proven character. This model pays direct tribute to two monumental milestones: Seiko’s first precision stopwatch developed for international competitions in 1964, and the groundbreaking 1969 introduction of the world's first automatic chronograph. Its stealthy, monochrome color palette draws inspiration from Seiko's historic 1972 winter sports stopwatch, where a bold matte black dial was specifically engineered to eliminate glare and ensure absolute legibility against blinding snow.

The deeply textured matte black dial surface absorbs ambient light to reduce reflection. It features crisp, high-contrast white LumiBrite markers alongside vibrant red subdial hands and chronograph accents that deliver instant, split-second readability under any lighting conditions. Framing the perimeter of the dial face is an integrated tachymeter ring, ready for measuring speed over distance.

Elite Caliber 8R46 Column-Wheel Architecture

Beneath the stealth exterior beats the pinnacle of Seiko's mechanical timing engineering: the in-house Caliber 8R46 automatic movement. Operating at a high-beat frequency of 28,800 vibrations per hour, this 34-jewel powerhouse measures elapsed intervals up to 30 minutes in precise 1/8-second increments. Built for true horological purists, the movement features both a column wheel and a vertical clutch system. This advanced configuration guarantees an instantly smooth, stutter-free start when engaging the stopwatch pusher, while maintaining superior precision and optimizing power reserve stability.

The watch boasts a command presence on the wrist, built with a 42.5mm stainless steel case treated with a premium black hard coating. Measuring 15.1mm in height, the bold silhouette is shielded by a scratch-resistant sapphire crystal featuring an anti-reflective treatment on the interior surface. For a seamless, sporty fit, the SRQ045 comes equipped with an athletic black calf leather strap engineered with protective, covered interior stitching designed to shield the leather from sweat during active wear. Bringing unmatched vintage DNA into a contemporary professional instrument, it offers 100 meters of water resistance for ultimate daily versatility.

• Brand: Seiko

• Collection: Prospex Speedtimer (Mechanical Chronograph Series)

• Model Number: SRQ045 (SRQ045J1)

• Condition: Pre-Owned

• Movement: Caliber 8R46 In-House Mechanical Automatic Chronograph (Hacking & Hand-Winding Capable)

• Movement Mechanics: 34 Jewels, Column Wheel, Vertical Clutch, MEMS Escapement

• Frequency: 28,800 Vibrations Per Hour (4Hz)

• Case Material: Stainless Steel with Premium Matte Black Hard Coating

• Dial Presentation: Anti-Reflective Matte Black with High-Visibility Red Accent Hands

• Luminescence: LumiBrite Coating on Hands and Dimensional Hour Markers

• Crystal: Dual-Curved Sapphire Crystal with Inner Anti-Reflective Coating

• Case Dimensions: 42.5mm Diameter / 15.1mm Thickness

• Strap Configuration: Sport Black Calf Leather Band with Covered Anti-Perspiration Stitching

• Complications: 30-Minute Counter Subdial, Running Small Seconds, Chronograph Second Hand, Date Display

• Water Resistance Rating: 100 Meters (330 Feet) / 10 Bar