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Seiko Prospex Speedtimer Black Dial

The Seiko Prospex Speedtimer Black Dial is a sporty men’s chronograph inspired by Seiko’s historic professional timekeeping heritage. The modern Speedtimer collection takes design inspiration from Seiko’s 1960s and 1970s timing watches while incorporating contemporary materials and technology.

The black dial gives the watch a versatile appearance that works naturally with casual, business-casual, and motorsport-inspired outfits. Its chronograph layout and tachymeter scale reinforce the performance-focused character associated with the Prospex Speedtimer collection.

Solar-Powered Chronograph Movement

The Speedtimer solar chronograph platform uses Seiko’s Caliber V192 solar movement. The movement is designed to operate using light and provides approximately six months of operation when fully charged. Seiko specifies accuracy of approximately ±15 seconds per month for V192 models.

The chronograph can measure elapsed time for up to 60 minutes in 1/5-second increments. Additional functions include a 24-hour hand, small seconds, power reserve indicator, date display, and overcharge prevention.

Sporty Black Dial Design

The black dial creates a strong contrast with the hands and applied indexes, supporting the high-readability design expected from a Prospex sports watch. Seiko describes the Speedtimer dial design as being developed with readability and legibility in mind.

The chronograph sub-dials give the watch its distinctive motorsport-inspired appearance, while the tachymeter scale adds another functional element to the racing-style design.

Sapphire Crystal

Selected Seiko Prospex Speedtimer solar chronographs feature a curved sapphire crystal with anti-reflective coating on the inner surface. Sapphire provides strong scratch resistance and complements the watch’s practical sports-oriented construction.

Stainless Steel Sports Construction

The Speedtimer is built around a stainless steel case and bracelet, giving it a durable and versatile profile suitable for everyday wear. Depending on the exact Speedtimer reference, case dimensions can vary, so the exact reference should be confirmed before publishing model-specific measurements.

For example, Seiko’s 39mm V192 Speedtimer references measure approximately 39.0mm in diameter, 13.3mm thick, and 45.5mm lug-to-lug, while some later references use a larger 41.4mm case.

Tachymeter and Chronograph Function

A defining feature of the Seiko Prospex Speedtimer is its tachymeter scale, a design element associated with traditional racing chronographs. Combined with the stopwatch function, it gives the watch a distinctly motorsport-inspired appearance.

The combination of chronograph sub-dials, tachymeter scale, black dial, and stainless steel case makes this Seiko an appealing choice for enthusiasts who prefer functional sports watches with a strong racing influence.

10 Bar Water Resistance

Many V192 Prospex Speedtimer references provide 10 bar water resistance, making them suitable for everyday activities and recreational use. However, water-resistance specifications should be checked against the exact reference before publishing a final product specification.

Key Features

• Seiko Prospex Speedtimer Black Dial
• Solar-powered chronograph
• Seiko V192 movement on applicable V192 references
• Approximately 6-month operating time when fully charged
• Accuracy of approximately ±15 seconds per month on V192 models
• Chronograph up to 60 minutes
• 1/5-second chronograph increments
• 24-hour hand
• Small seconds hand
• Power reserve indicator
• Date display