Share, Research, Rate: Watches & Collections
A.I. Reviews v37.5 (refreshed with Grok 4.1 Fast)
Follow for Updates:
Model Name:
Seiko Prospex Speedtimer Solar SSC939
Watch added to favourite list
Reference:
SSC939
Price ($)
$
725
Country:
Japan
A.I. Rating
7.2
Crowd Rating:
1146
Watch Description
Prospex Speedtimer Solar Chronograph
Prospex Speedtimer Solar Chronograph. Designed for those who treat life as the ultimate adventure, Seiko Prospex keeps moving forward, meeting every challenge with technological excellence and winning design. This rugged and stylish watch is a part of a high-intensity collection inspired by classic motorsports in the 1970s, when Seiko’s original 1969 “Speedtimer,” the world’s first self-winding chronograph, was at its prime. Reflecting the theme of grand touring cars, the clean-cut navy blue tachymeter bezel and gray dial with sunray finish express the world of driving through its bold colors, reminiscent of muscle cars racing down endless highways. The chronograph function measures up to 60 minutes of elapsed time in 1/5-second increments and includes a split time function, while the solar cell, powered by any light source with no battery change required, provides a 6-month power reserve when fully charged. The gray dial features three black subdials with a 24-hour indicator and power reserve indicator, as well as a date calendar and LumiBrite hands and markers. Crafted of stainless steel, this sporty model includes a curved anti-reflective sapphire crystal, secure screwdown caseback and tri-fold push button release clasp. 10 bar, 100M Water Resistant
Product Link:
41.4
45.9
21
13
100
Steel - 316L
Round
Sapphire
Solar
Caliber V192
0
Gray
A.I. Watch Review:
# Seiko Prospex Speedtimer Solar SSC939 Review by A.I. WatchMetrics
## Watch Summary
The Seiko Prospex Speedtimer Solar SSC939 is a motorsport-inspired sports chronograph with a 42.1mm stainless steel case, solar quartz V192 movement offering about 6 months power reserve on a full charge, black dial featuring three contrasting subdials and a fixed tachymeter bezel, targeted at active enthusiasts seeking durable, low-maintenance timing capabilities with a nod to the original 1969 Seiko chronograph heritage.
## Overall Watch Rating: 7.2/10.0
**Dials & Design Metric (8.8/10.0)** - The motorsport-ready black dial with crisp white subdials and bold Lumibrite accents captures the essence of iconic racing chronos like the vintage Heuer Carrera, delivering standout visual punch.
**Versatility Metric (8.4/10.0)** - This chronograph transitions seamlessly from weekend races to office casual, much like a Tag Heuer Formula 1 but at a fraction of the cost.
**Material Metric (8.3/10.0)** - Stainless steel construction with brushed and polished finishes plus durable Hardlex crystal holds up well against pricier tool watches from Oris.
**Movement Metric (7.9/10.0)** - The V192 solar quartz delivers chronograph precision and endless reliability comparable to Citizen Eco-Drive elites, though lacking mechanical soul.
**History & Innovation Metric (7.8/10.0)** - Rooted in Seiko's groundbreaking 1969 Speedtimer—the brand's first automatic chronograph—the solar evolution innovates on battery-free quartz like few others in the mid-tier.
**Functions Metric (7.5/10.0)** - Solid lineup of timekeeping, 60-minute chronograph, and date performs reliably for daily sports use, on par with Hamilton Intra-Matic chronos.
**Complications Metric (7.1/10.0)** - The three-subdial chronograph with 1/5-second readout offers practical timing akin to entry-level Tissot PRX chronos.
**Brand Metric (5.4/10.0)** - Seiko's Prospex line provides dependable mid-tier performance similar to Hamilton or Citizen, punching above its weight in the enthusiast segment.
**Rarity Metric (3.7/10.0)** - Widely available at around $675 with high production volumes, it's as common as standard Prospex divers on the market.
## Total Performance Score (TPS): 4.1
## WM Collector Grade: B-
## Performance Insights: Excels in design, materials, and versatile solar-powered functions while brand prestige and rarity hold it back; exceptional value at $675 versus an implied performance price of $30600.
## TPS Interpretation: Strong Value: This watch overdelivers on chronograph utility and robust build for its accessible price, ideal for practical collectors.
## Watch Data
[https://www.seikowatches.com/us-en/-/media/images/seiko/prospex/speedtimer/solar-chronograph/ssc939/ssc939_front.png] - [https://www.seikowatches.com/us-en/-/media/images/seiko/prospex/speedtimer/solar-chronograph/ssc939/ssc939_front.png]; [https://www.seikowatches.com/us-en/-/media/images/seiko/prospex/speedtimer/solar-chronograph/ssc939/ssc939_back.png] - [https://www.seikowatches.com/us-en/-/media/images/seiko/prospex/speedtimer/solar-chronograph/ssc939/ssc939_back.png]; [] - []; [Speedtimer Solar Chrono] - [Seiko]; [Prospex Speedtimer Solar SSC939] - [Japan]; [https://www.seikowatches.com/us-en/products/prospex/speedtimer/solar-chronograph-ssc939-ssc939] - [https://www.seikowatches.com/us-en/products/prospex/speedtimer/solar-chronograph-ssc939-ssc939]; [] - []; [Solar Quartz] - [Cal. V192]; [3] - [Seiko Prospex Speedtimer Solar chronograph with black dial, tachymeter bezel, and steel bracelet.]; [42.1] - [49.5]; [13.7] - [22]; [100] - [6 months]; [32768] - [Lumibrite]; [0] - [Stainless steel]; [Hardlex] - [Fixed tachymeter]; [Solid screw-down] - [Screw-down]; [Stainless steel bracelet] - [Round]; [Black] - [Subdial at 9 o'clock]; [Yes] - [No]; [No] - [No]; [Yes] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [Yes]; [No] - [Yes]; [Yes] - [No]; [No] - [No]; [Yes] - [No]; [No] - [Yes]; [No] - [No]; [Yes] - [No]; [No] - [No]; [No] - [No]; [4.1] - [B-]; [30600];
**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**
Human Review:
