The Seiko Prospex Speedtimer SSC815P1 is the 39 mm solar chronograph in Seiko’s modern Speedtimer family: navy dial, black tachymeter bezel, curved sapphire, and calibre V192. Case diameter is 39.0 mm, thickness 13.3 mm, lug-to-lug about 45.5 mm. Water resistance is 100 metres. When fully charged it runs for about six months. Authentic stock, inspected before dispatch at Chronospride Australia.
Speedtimer is Seiko’s motorsport timing line, tracing back to the 1969 automatic chronographs. This solar version is the smaller, lighter daily option next to the 42 mm mechanical 8R pieces. The navy “panda” layout uses contrasting subdials, a central chronograph seconds hand, a 24-hour register, small running seconds, and a date window. A tachymeter scale sits on the black bezel. Inner anti-reflective coating on the sapphire keeps the dial readable outdoors.
Who the SSC815P1 suits
Choose this if you want a Seiko chronograph that never needs a battery change in normal wear, sits under 40 mm, and still looks like a racing watch. 39 mm width and 45.5 mm lug-to-lug make it easier on a 16–18 cm wrist than a 42 mm Speedtimer. Thickness is 13.3 mm, so it is not a dress watch; shirt cuffs will notice it. The steel bracelet uses a three-fold clasp with push-button release and 20 mm lugs.
Solar (any light) feeds V192. Seiko quotes ±15 seconds per month and overcharge protection. A power-generation / reserve indication on the dial tells you when the cell needs more light. Store it in a drawer for months and it will stop; a few hours in daylight brings it back. 100 m water resistance is for swimming and rain, not diving; keep pushers unused in water.
Specifications
- Brand: Seiko
- Collection: Prospex Speedtimer
- Reference / SKU: SSC815P1 (also listed as SSC815)
- Movement: solar quartz calibre V192
- Accuracy: approximately ±15 seconds per month
- Power reserve: about 6 months when fully charged; overcharge prevention
- Functions: hours, minutes, small seconds, 24-hour hand, date, chronograph (1/5-second, up to 60 minutes), tachymeter, power-generation display
- Case: stainless steel, 39.0 mm diameter, 13.3 mm thick, about 45.5 mm lug-to-lug
- Crystal: curved sapphire with anti-reflective coating on the inner surface
- Dial: navy / blue, Lumibrite on hands and indexes
- Bezel: black tachymeter
- Case back: screw-down
- Bracelet: stainless steel, 20 mm lug width, three-fold clasp with push-button release
- Water resistance: 100 metres / 10 bar
- Weight: about 160–161 g
- GTIN / JAN: 4954628244536
Compare with other Seiko Prospex pieces, or see solar watches if battery-free quartz is the brief. For a slimmer battery quartz chrono in a similar width, see the Seiko Spirit SBTR011.
Frequently asked questions
What movement does the Seiko Prospex Speedtimer SSC815P1 use?
Calibre V192, a Seiko solar quartz chronograph. It times to 1/5 second for up to 60 minutes, shows a 24-hour hand and date, and includes overcharge prevention plus a display that the movement is generating power again after a low-charge stop.
Does the SSC815P1 need a battery change?
Not in normal use. Light charges the secondary cell. Seiko quotes about six months of running time from a full charge in the dark. If it sits unused, put it in daylight or under a lamp (not on a hot windowsill) until the hands move and the power display recovers.
What is the case size of the SSC815P1?
Official Seiko listings: 39.0 mm diameter and 13.3 mm thickness. Lug-to-lug is about 45.5 mm. Lug width is 20 mm. Weight is about 160 g. That is a compact chronograph, taller than a three-hand dress watch.
Is the crystal sapphire or Hardlex?
Curved sapphire with anti-reflective coating on the inner surface. That is a step up from Hardlex used on many Seiko 5 and Spirit models, and it is the right glass for a Prospex Speedtimer at this price.
Is the SSC815P1 water resistant enough for swimming?
Yes for swimming and showering with the crown in, at the 100 m / 10 bar rating. It is not a dive watch. Do not operate the chronograph pushers underwater. Rinse after salt water.
Where can I buy the Seiko SSC815P1 in Australia?
This page is the Chronospride listing. Authentic stock, inspected before dispatch. Free shipping Australia-wide on eligible orders. Covered by Chronospride’s 12 months warranty, handled by our team. See our authenticity and warranty page.
Authentic stock, inspected before dispatch. Free shipping Australia-wide on eligible orders. Covered by Chronospride’s 12 months warranty, handled by our team. See our authenticity and warranty page.
| Brand | Seiko |
|---|---|
| Case-Size | 39mm |
| Band-Width | 20mm |
| Lug-Width | 20mm |
| Lug to lug size | 45.5mm |
| Case Thickness | 13.3mm |
| MPN | SSC815P1 |
| Gender | Men's |
| Band-Material | Stainless Steel |
| Case-Material | Stainless Steel |
| Movement | Solar |
| Band-Colour | Silver |
| UPC | 4954628244536 |
| EAN | 4954628244536 |
| Calibre | V192 |
| Case-Colour | Silver |
| Face-Colour | Blue |
| Power reserve | 180 days |
| Watch-Shape | Round |
| Water-Resistance-Rating | 100M |