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Seiko Prospex SSC813P1 Speedtimer Bracelet Watch - W24139
Ref. SSC813P1
Sits in Seiko’s upper tier here — more premium than three quarters of the Seiko watches we list, which start at £110.
Price range £110 to £3,550 across 207 Seiko watches in stock.The SSC813P1 traces its layout directly to Seiko's 1969 Speedtimer, one of the first automatic chronographs produced anywhere in the world. That original dial arrangement — white field, dark contrasting subdials, tachymeter bezel — has become a shorthand for vintage motorsport timekeeping, and the affectionate nickname "Seitona" or "Seiko Panda" that has attached itself to this generation tells you how faithfully the reference has been kept. At 39mm with a 45.5mm lug-to-lug span, this sits at a size that flatters a wide range of wrists without shrinking the dial into illegibility. The sandblasted white surface reads cleanly in most light, and the tinted solar-cell subdials avoid the washed-out purple that afflicted earlier solar dials — a genuine improvement in how the watch holds up aesthetically over time. The V192 movement underneath charges from any ambient light source and will hold its charge for six months in darkness, which makes it a practical daily tool rather than a careful one. Accuracy runs to ±15 seconds per month, which is where solar quartz sits, and a small power reserve arc on the lower subdial moves from F to E so the state of charge is always visible at a glance. The clasp offers two micro-adjustment positions for fine daily tuning, with full link removal via a pin-and-collar system for larger sizing changes — straightforward enough to do at home.
- Reference
- SSC813P1
- Brand
- Seiko
- Collection
- Speedtimer
- Case size
- 39mm
- Case thickness
- 13.3mm
- Lug width
- 20mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- White
- Crystal
- Sapphire
- Bezel
- Fixed tachymeter
- Movement
- Automatic
- Calibre
- V192
- Functions
- Chronograph, Date, Small seconds, Power reserve indicator, Tachymeter, Solar powered
- Water resistance
- 100m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Three-fold clasp
- Lume
- LumiBrite
- Retailer
- F.Hinds
Additional specifications
- Lug-to-lug
- 45.5mm
Learn more about Seiko
Kintaro Hattori opened a watch and clock shop in Tokyo in 1881, aged twenty-one, and began manufacturing under the name Seikosha — roughly, house of exquisite workmanship — in 1892. The Seiko name appeared on watches from 1924.
The company's significance is that it broke the Swiss monopoly twice. First on precision: Seiko was appointed official timekeeper of the 1964 Tokyo Olympics and built the quartz chronometers and printing timers to do it, and in the 1960s its movements placed highly at the Neuchâtel and Geneva observatory trials against the best Swiss houses.
Then on technology. On Christmas Day 1969 Seiko released the Astron, the world's first quartz wristwatch, accurate to five seconds a month where mechanical watches managed that per day. The consequences for Switzerland were catastrophic — employment in the Swiss industry fell by roughly two-thirds over the following decade. Seiko deliberately did not enforce its quartz patents, allowing the technology to spread.
The same year it produced the 6139, among the first automatic chronographs, and it has since introduced Kinetic, Spring Drive — a hybrid regulating a mechanical mainspring electronically, giving a perfectly gliding seconds hand — and its own dive and field lines.
Seiko remains fully vertically integrated, making its own hairsprings, quartz crystals, and even the Zaratsu-polished cases, at price points from under a hundred pounds upward.
- 1881
- Kintaro Hattori opens his Tokyo shop.
- 1924
- The first watches carry the Seiko name.
- 1964
- Official timekeeper of the Tokyo Olympics.
- 1969
- The Astron becomes the first quartz wristwatch.
- 1999
- Spring Drive enters production.
Manufacturer’s guarantee
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 100m water resistance covers swimming and watersports
- 39mm suits most wrists
- 45.5mm lug-to-lug keeps the 39mm case wearable
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | SSC813P1 |  H70455533 |  T1374071109100 |
|---|---|---|---|
| Price | £640 | £640 | £640 |
| Case size | 39mm | 38mm | 40mm |
| Water resistance | 100m | 100m | 100m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Leather strap | Stainless steel bracelet |
| Power reserve | — | 80 hours | 80 hours |
| This watch | Closely matched | Closely matched |
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 100m it is rated for swimming and snorkelling, though not for diving.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
What size strap does it take?
20mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 45.5mm, which suits wrists from roughly 16cm (6¼ inches) upward.
Lug-to-lug decides fit more than case diameter does.
Is it a men's or women's watch?
Listed as men's, though at 39mm it sits in the range that suits anyone.
Cheapest place to buy
F.Hinds is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
Who are F.Hinds?
F.Hinds has been run by the same family since 1856 and is now in its fifth generation, with more than 115 shops across England and Wales. They are a member of the Responsible Jewellery Council and an Authorised Diamond Dealer.
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