SEIKO CHRONOGRAPH SSB379P1 QUARTZ MEN WATCH
SSB379P1
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- Warranty 3 Years
The Seiko SSB379P1 is a quartz chronograph in the format the style was built on: a black dial, a tachymeter scale around the edge, sub-dials for measuring elapsed time, and a stainless steel bracelet. There is no styling exercise happening here. It is a stopwatch you can wear with a shirt, and at 41.5mm across with a 46.5mm lug-to-lug, it sits in the size range where a chronograph reads as a proper instrument without overwhelming a wrist.
Inside is Seiko's Calibre 8T67, a quartz chronograph movement accurate to ±15 seconds per month with roughly three years from a battery. It measures up to 12 hours in 1/5-second increments, carries a separate small seconds hand so you can tell at a glance the watch is running, and shows the date. The case is 12.1mm thick with a screw case back, the crystal is Hardlex, and it is rated to 100 metres.
At a Glance
- BrandSeiko
- CollectionConceptual
- MovementCalibre 8T67 Quartz
- Case Size41.5mm
- DialBlack
- Case MaterialStainless Steel
- GlassHardlex
- FunctionsChronograph + Small Seconds + Date
- Chronograph12 Hours, 1/5 Second
- Water Resistance100m (10 BAR)
- BraceletStainless Steel, 22mm
- Weight136g
- Battery LifeApprox. 3 Years
Why You'll Love It
- ±15 seconds per month. That is quartz accuracy — you set it and forget it, where a mechanical chronograph would need resetting weekly.
- A working 12-hour stopwatch measured to a fifth of a second. Not a decorative sub-dial layout: the pushers do what they look like they do.
- The small seconds hand runs continuously, so you can see the watch is alive without starting the chronograph. It is the detail that separates a real chronograph dial from a three-hander with extra circles printed on it.
- Black dial on steel is the most usable combination there is. It works under a cuff at the office and with a t-shirt at the weekend without looking like it is trying to do either.
- 41.5mm with a 46.5mm lug-to-lug means the case is broad but short. It covers the wrist without hanging over the edges the way many chronographs of this diameter do.
- The tachymeter scale on the bezel turns the chronograph into a speed calculator — a function most people never use and every chronograph owner enjoys knowing is there.
- Three years from a battery, then a straightforward replacement. No winding, no charging, no routine.
- 22mm lug width, which is a widely available strap size. Leather or rubber changes this watch completely if you tire of the bracelet.
Perfect For
- Everyday Wear
- Office & Boardroom
- First Chronograph
- Low-Maintenance Owners
- Classic Steel Styling
- Strap Swappers
- Students & Graduates
- Gift for Him
Key Features
- Calibre 8T67 quartz chronograph movement — accurate to ±15 seconds per month, with a battery life of approximately three years.
- Chronograph measuring up to 12 hours in 1/5-second increments — start, stop and reset from the pushers either side of the crown.
- Small seconds hand — a continuously running seconds display independent of the chronograph, so the main sub-dial layout stays readable whether the stopwatch is running or not.
- Date display — set from the crown.
- Tachymeter scale — a fixed scale for calculating speed over a measured distance using the chronograph.
- Stainless steel case and bracelet — 41.5mm across, 12.1mm thick, 46.5mm lug-to-lug, with a screw case back and a total weight of 136 grams.
- Hardlex crystal — Seiko's own hardened mineral glass, more shatter-resistant than sapphire though less scratch-resistant.
- Three-fold clasp with push button release — a secure folding clasp that opens with a squeeze rather than a pull.
- 100-metre water resistance — rated for swimming and recreational water activity.
Technical Specifications
The Seiko SSB379P1 is a 41.5mm quartz chronograph powered by Calibre 8T67, accurate to ±15 seconds per month with a battery life of approximately three years. The stainless steel case measures 12.1mm thick and 46.5mm lug-to-lug at a total weight of 136 grams, with a screw case back and a Hardlex crystal. It features a black dial with a tachymeter scale, a chronograph measuring up to 12 hours in 1/5-second increments, a small seconds hand, a date display, a stainless steel bracelet on a 22mm lug width with a three-fold clasp and push button release, and 100-metre water resistance.
| Model Number | SSB379P1 |
| Case Material | Stainless Steel |
| Case Diameter | 41.5mm |
| Case Thickness | 12.1mm |
| Lug-to-Lug | 46.5mm |
| Lug Width | 22mm |
| Weight | 136g |
| Glass | Hardlex |
| Caseback | Screw Case Back |
| Water Resistance | 100 Metres (10 BAR) |
| Colour | Black |
| Scale | Tachymeter |
| Small Seconds | Yes |
| Date Display | Yes |
| Material | Stainless Steel |
| Lug Width | 22mm |
| Clasp | Three-Fold with Push Button Release |
| Calibre | Seiko 8T67 |
| Type | Quartz |
| Precision | ±15 seconds per month |
| Battery Life | Approx. 3 Years |
| Chronograph | 12 Hours, 1/5-Second Increments |
| Other Functions | Small Seconds Hand, Date Display |
Best Matched With
- Navy Suit
- White Oxford Shirt
- Charcoal Trousers
- Grey Knitwear
- Dark Denim
- Black Leather Belt
- Leather Loafers
Frequently Asked Questions
How do I use the chronograph?
The upper pusher starts and stops the timing. The lower pusher resets everything to zero once stopped. The chronograph measures up to 12 hours in 1/5-second increments, and the elapsed time is read across the sub-dials rather than from the main hands, which keep showing the time of day throughout.
Which hand is the small seconds and which is the chronograph?
The small seconds hand runs continuously on its own sub-dial and tells you the watch is working. The chronograph seconds hand sits still at zero until you start the stopwatch, then sweeps from the centre. If you have bought a chronograph before and found the centre seconds hand parked and motionless, this is why — that is normal, not a fault.
What is the tachymeter scale for?
It converts elapsed time into speed over a known distance. Start the chronograph as you pass a marker, stop it one kilometre later, and the number the chronograph seconds hand points to on the scale is your average speed in kilometres per hour. It works for any unit as long as the distance is one of them, and it only reads speeds fast enough to cover the distance in under a minute.
How accurate is it?
±15 seconds per month, which is the standard Seiko quotes for this movement. In practice that means adjusting it once or twice a year rather than weekly. A mechanical watch would drift that much in a couple of days.
How long does the battery last?
Approximately three years. Running the chronograph frequently draws more power and can shorten that. When it needs replacing, bring it to any City Chain outlet — the screw case back means it is not a job to attempt at home, and an improperly resealed case loses its water resistance.
Is Hardlex the same as sapphire?
No. Hardlex is Seiko's own hardened mineral glass. It resists shattering better than sapphire, but it scratches more easily — sapphire rates 9 on the Mohs hardness scale and mineral glass sits well below that. If a scratch-free crystal is your priority, look at models specified with sapphire instead.
How does 41.5mm wear?
Broad but short. The 46.5mm lug-to-lug is compact for a 41.5mm chronograph, so the case sits within the wrist rather than over the edges. At 136 grams on the full steel bracelet it has real presence — noticeably more substantial than a three-hand watch of the same diameter. Try it on at any City Chain outlet if you are unsure.
Can I swim with it?
Yes. At 100-metre water resistance it handles swimming and recreational water activity. It is not a diver's watch and is not rated for scuba diving. Never operate the crown or the chronograph pushers while the watch is wet — that is the most common way water gets into a chronograph.
Can I change the bracelet for a strap?
Yes. The lug width is 22mm, a widely available size, so leather, rubber and mesh straps all fit. A brown leather strap in particular takes this from a sports chronograph to something considerably dressier.
Is the bracelet adjustable?
Yes. Links can be added or removed to size it, and the three-fold clasp opens with a push button release. City Chain offers complimentary bracelet sizing at any outlet — bring your warranty book along for the service.
What warranty does this watch come with?
The SSB379P1 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
- Free Shipping All orders within Singapore
- Bracelet Adjustment Size it in-store
Extra $15OFF with min. $200 spend
Use Code: 15FORYOU
Extra $30OFF with min. $400 spend
Use Code: 30FORYOU
Case & Dimensions
Case Diameter: 41.5 mm
Case Thickness: 12.1mm
Case Length: 46.5mm
Band Width: 22mm
Case Material: Stainless steel
Band Material: Stainless steel
Movement
Quartz
Calibre: 8T67
Precision: ±15 seconds per month
Battery Life: Approx. 3 years
Equipped with small seconds hand
Chronograph up to 12 hours in 1/5 second increments
Date display
Dial & Features
Dial Colour: Black
Glass: Hardlex
Three-Fold Clasp With Push-Button Release
Case Screw Back
Weight: 136.0g
Water Resistant: 10 BAR
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.
