SEIKO PROSPEX SSC939P1 SOLAR SPEEDTIMER CHRONOGRAPH MEN WATCH
SSC939P1
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- Warranty 3 Years
Seiko designed this one around muscle cars. The Seiko Prospex SSC939P1 sits in the Speedtimer line under a theme Seiko calls Classic Motorsports — a nod to the 1970s, when the Speedtimer was in its prime and motorsport was at its loudest. The hour and minute hands are shaped after the original 1969 Speedtimer, and the colours follow the period: a clean grey dial inside a navy-blue aluminium bezel carrying a tachymetre scale.
It is a solar chronograph. Calibre V192 runs on light alone — no battery to replace — and holds around six months of charge once full. The chronograph times to 1/5th of a second over 60 minutes with a split time function, there is a power reserve indicator, a date and a 24-hour hand, and a chronograph seconds scale runs around the dial ring. The 41.4mm steel case sits under curved sapphire and is rated to 100 metres.
At a Glance
- BrandSeiko
- CollectionProspex Speedtimer
- MovementCalibre V192 Solar
- Case Size41.4mm
- Case Thickness13.0mm
- DialGrey, Baton Markers
- BezelNavy Aluminium, Tachymetre
- GlassCurved Sapphire, AR Coated
- Chronograph60 Min, 1/5 Sec, Split Time
- Power ReserveApprox. 6 Months
- Water Resistance100m
- BraceletStainless Steel, 21mm
Why You'll Love It
- It runs on light. Calibre V192 charges from any light source, indoors or out, so there is no battery to change and no winding to remember.
- Six months of running time from a full charge, with an overcharge prevention function so the cell is not damaged by long spells in bright light.
- Grey against navy. Most chronographs in this range run black-on-steel; the navy-blue aluminium bezel over a grey dial is what makes this one recognisable across a room.
- The hour and minute hands are drawn after the original 1969 Speedtimer, so the heritage shows in the hands rather than only in the name.
- A split time function on the chronograph — freeze a reading mid-timing without stopping the count.
- A power reserve indicator on the dial, so you can see how much charge is left rather than finding out when it stops.
- The tachymetre on the bezel converts elapsed time into speed, which is the feature that ties the design back to motorsport rather than just referencing it.
- 12 spots of LumiBrite on the hands and markers, charged by light and readable in the dark.
- Curved sapphire with anti-reflective coating on the inner surface — glare control without a coating exposed to scratching on the outside.
- ±15 seconds a month, held across the life of the charge.
Perfect For
- Motorsport & Racing
- Everyday Wear
- Chronograph Collectors
- Seiko Collectors
- Retro & Reissue Designs
- Low-Maintenance Wear
- Travel
- Gift
Key Features
- Calibre V192 solar movement — powered by light, running approximately 6 months when fully charged, accurate to ±15 seconds per month across a 5°C to 60°C range, with an overcharge prevention function.
- Chronograph up to 60 minutes in 1/5 second increments, with split time, plus a small seconds hand and a chronograph seconds scale around the dial ring.
- Navy-blue aluminium bezel with a tachymetre scale — for reading speed over a measured distance.
- Grey dial with baton markers and hour and minute hands shaped after the 1969 Speedtimer.
- Power reserve indicator, date display and a 24-hour hand.
- 12 spots of LumiBrite on the hands and hour markers.
- Curved sapphire crystal with anti-reflective coating on the inner surface.
- 41.4mm stainless steel case in silver — 13.0mm thick and 45.9mm lug-to-lug, at 164 grams, with a screw case back.
- Stainless steel bracelet on a 21mm lug width, with a three-fold clasp and push button release.
- 100-metre water resistance and magnetic resistance of 4,800 A/m.
Technical Specifications
The Seiko Prospex SSC939P1 is a 41.4mm solar chronograph from the Speedtimer collection, designed under Seiko's Classic Motorsports theme. It is powered by Calibre V192, which runs on light and operates for approximately 6 months when fully charged, accurate to ±15 seconds per month with an overcharge prevention function. The stainless steel case measures 13.0mm thick and 45.9mm lug-to-lug at 164 grams, with a navy-blue aluminium bezel carrying a tachymetre scale and a curved sapphire crystal with anti-reflective coating on the inner surface over a grey dial with baton markers. Functions include a chronograph running to 60 minutes in 1/5 second increments with split time, a small seconds hand, a power reserve indicator, a date display and a 24-hour hand, with 12 spots of LumiBrite on the hands and hour markers. It has a screw case back, a pull-out crown, a stainless steel bracelet on a 21mm lug width with a three-fold clasp and push button release, magnetic resistance of 4,800 A/m, and 100-metre water resistance.
| Model Number | SSC939P1 |
| Case Material | Stainless Steel |
| Case Colour | Silver |
| Case Diameter | 41.4mm |
| Case Thickness | 13.0mm |
| Lug-to-Lug | 45.9mm |
| Weight | 164.0g |
| Bezel | Navy-Blue Aluminium, Tachymetre |
| Glass | Curved Sapphire, Anti-Reflective Inner Coating |
| Caseback | Screw Case Back |
| Crown | Pull Out |
| Water Resistance | 100 Metres |
| Magnetic Resistance | 4,800 A/m |
| Colour | Grey |
| Markers | Batons |
| LumiBrite | 12 Spots, Hands & Hour Markers |
| Hand Indicators | Hour, Minute, Small Seconds, 24-Hour |
| Dial Ring | Chronograph Seconds Scale |
| Calendar | Date |
| Material | Stainless Steel |
| Colour | Silver |
| Lug Width | 21mm |
| Clasp | Three-Fold with Push Button Release |
| Calibre | Seiko V192 |
| Type | Solar |
| Display | Analogue |
| Functions | Chronograph (60 Minutes, 1/5 Second, Split Time), Tachymetre, Small Seconds, Power Reserve Indicator, Date, 24-Hour Hand, Overcharge Prevention |
| Accuracy | ±15 seconds per month (5°C to 60°C) |
| Power Reserve | Approx. 6 Months When Fully Charged |
Best Matched With
- Navy Bomber Jacket
- White Oxford Shirt
- Grey Crewneck
- Dark Denim
- Charcoal Chinos
- Driving Shoes
- Tan Suede Jacket
Frequently Asked Questions
What is Speedtimer?
It is the name Seiko gives its chronographs, dating to the company's entry into international sports timing in the 1960s. In 1969 Seiko applied it to a wristwatch with Calibre 6139, which Seiko describes as the world's first automatic chronograph with a column wheel and vertical clutch. The modern Prospex Speedtimer line is built on that timing heritage; this particular reference is a solar chronograph rather than a mechanical one.
What is the Classic Motorsports theme?
It is the design brief Seiko set for this reference. The 1970s were the Speedtimer's prime years and motorsport's loudest, and Seiko describes the watch as reminiscent of the vintage muscle cars that raced down endless highways. In practice that shows up as the navy-blue bezel over a grey dial, the tachymetre, and hour and minute hands shaped after the original 1969 Speedtimer.
Do I ever need to change the battery?
No. Calibre V192 is solar — it converts light into power and stores it, so ordinary daylight and indoor lighting keep it charged. There is no battery replacement in normal use, and an overcharge prevention function stops the cell being damaged by long spells in bright light.
What happens if I leave it in a drawer?
It will keep running for approximately six months from a full charge. Beyond that it stops, and putting it back in light will start it again — you then reset the time and date. The power reserve indicator on the dial tells you where you stand before it gets that far.
What does the tachymetre do?
It converts elapsed time into speed. Start the chronograph as you pass a marker, stop it one kilometre or one mile later, and the figure the chronograph hand points to on the bezel is your average speed over that distance in kilometres or miles per hour. It works for anything measured over a fixed distance, not only driving.
What is the split time function?
It lets you take an intermediate reading without ending the timing run. Press to freeze the display and read the split, and the chronograph keeps counting underneath; press again and the hands jump forward to catch up with the real elapsed time. It is the function you want for lap times.
How far does the chronograph go?
Up to 60 minutes, measured in increments of 1/5th of a second. A chronograph seconds scale runs around the dial ring, and a small seconds hand runs continuously alongside, so you can see at a glance that the watch itself is still going.
How accurate is it?
Seiko states ±15 seconds per month for Calibre V192, across a normal temperature range of 5°C to 60°C. That works out to a few seconds a week at most, so checking it two or three times a year is enough.
Can I swim with it?
Yes. At 100 metres this handles swimming, snorkelling and showering without concern, though Seiko gives it no diver's designation, so it should not be used for scuba diving. Make sure the crown is pushed fully home first, avoid operating the chronograph pushers while it is submerged, and rinse it in fresh water after the sea or a pool.
How does 41.4mm wear?
Moderately, for a chronograph. At 13.0mm thick and 164 grams it has weight to it, but the 45.9mm lug-to-lug is compact and keeps it within the width of most wrists — shorter than the diameter would suggest. Note the 21mm lug width, which is slightly unusual. Any City Chain outlet can put it on your wrist.
Can the bracelet be adjusted?
Yes. Links can be added or removed to size it, and the three-fold clasp opens on a push button release rather than a pin buckle, which is more secure and easier to fasten one-handed. City Chain offers complimentary bracelet sizing at any outlet; bring your warranty book along for the service.
Does a solar watch need servicing?
Less often than a mechanical watch, but it is not maintenance-free. The rechargeable cell has a working life measured in years rather than months, and the case gaskets that hold the water resistance need replacing periodically. City Chain can arrange servicing through Seiko's authorised service network — bring your warranty book.
What warranty does this watch come with?
The SSC939P1 comes with a 3-year warranty when purchased from City Chain Singapore, an authorised Seiko retailer. Keep your warranty card and proof of purchase — both are required when submitting the watch for service.
Why Buy from City Chain Singapore
- Authorised Retailer 100% genuine Seiko product
- 3-Year Warranty Covered on every purchase
- Bracelet Adjustment Complimentary sizing in store
- Free Shipping All orders within Singapore
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Calibre Type: Solar - Powered By Any Light Source
Calibre Number: V192
Calibre Function: Chronograph
Accuracy: +/-15 seconds a month (5°C–60°C)
Power Reserve: Approx. 6 months (fully charged)
Display: Analogue
Case Material: Stainless Steel
Case Color: Silver
Case Diameter: 41.4mm
Case Thickness: 13.0mm
Water Resistance: 100 Metres
Glass: Curved Sapphire Crystal
Crown: Pull Out
Rotating Bezel: N/A
Dial Color: Grey
Dial Markers: Batons
Hand Indicators: Hour, Minute, Seconds, 24-Hour
Calendar Indicators: Date
Lumibrite: Hands & Hour Markers
Band/Bracelet: Bracelet - Stainless Steel
Band Color: Silver
Power Reserve Indicator: Yes
Stopwatch: 60-minute measurement in 1/5th of a second increments with split time capability
Tachymetre: Yes
Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)
• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)
Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.
For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.
