SEIKO PROSPEX SSC939P1 - Speedtimer Solar Chronograph

The Seiko Prospex SSC939P1 is a sporty and precise solar-powered chronograph from Seiko’s Prospex Speedtimer line, inspired by classic 1960s–70s motorsport stopwatches. Styled under the “Grand Touring” theme, this model combines vintage racing cues with modern performance: a tachymeter bezel, a solar V192 movement, and a clean grey dial with strong legibility designed for drivers and chronograph fans alike.

Key Features

• Speedtimer Solar Chronograph — part of the Prospex lineup, styled after historic racing timepieces.
• Solar-Powered V192 Movement — charges from any light source; no regular battery changes required. Runs for ~6 months on a full charge.
• 60-Minute Chronograph — measures elapsed time in 1/5-second increments.
• Tachymeter Bezel — fixed aluminum bezel for calculating speed.
• Date Display — practical calendar function at 4:30.
• 24-Hour Subdial — AM/PM indicator for everyday reference.
• Power Reserve Indicator — shows remaining solar charge.
• LumiBrite Hands & Indexes — enhanced visibility in low light.
• Classic Motorsports Styling — navy-blue aluminum bezel with grey dial for a vintage racing vibe.

Specifications

• Model: SSC939P1
• Collection: Seiko Prospex Speedtimer
• Movement: Solar Quartz — Caliber V192
• Accuracy: ±15 seconds per month (typical)
• Power Reserve: Approx. 6 months when fully charged
• Functions:
• Hours, Minutes, Seconds
• Chronograph (60 min / 1/5 sec)
• 24-Hour Subdial
• Power Reserve Indicator
• Date Display
• Tachymeter Scale

Case & Bracelet / Strap:

• Case Material: Stainless Steel
• Bracelet: Stainless Steel bracelet with three-fold clasp and push-button release
• Crystal: Curved Sapphire Crystal with inner anti-reflective coating
• Case Diameter: Approx. 41.4 mm
• Case Thickness: Approx. 13.0 mm
• Lug Width: 21 mm
• Weight: Approx. 164 g
• Water Resistance: 10 bar (100 m) — suitable for swimming and everyday wear
• Magnetic Resistance: ~4,800 A/m
• Caseback: Screw case back

Colorway:

• Dial: Grey with black chronograph and polished accents
• Bezel: Navy-blue aluminum with tachymeter scale
• Hands & Markers: Silver with LumiBrite
• Bracelet: Silver stainless steel

The Seiko Prospex SSC939P1 Speedtimer Solar Chronograph is a vintage-inspired yet modern sports chronograph built for everyday life and motorsport enthusiasm alike. Its solar charging, reliable V192 movement, and classic tachymeter styling make it a compelling choice for chronograph fans who want practical performance wrapped in racing heritage