SEIKO PROSPEX HBC003J1 SPEEDTIMER MECHANICAL MEN WATCH
HBC003J1
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- Backordered, shipping soon
- 15% off in cart
- Warranty 3 Years
The Seiko Prospex HBC003J1 pairs a light blue dial with a stainless steel bracelet in a 39.5mm case, with a rotating inner ring set inside curved sapphire rather than around the outside of the case. LumiBrite covers the hands and hour markers, and there is a date.
Inside is calibre 6R55, a mechanical movement wound by the motion of your wrist and by hand, holding approximately 72 hours once fully wound. The case carries a 200-metre water resistance rating and is closed by a screw case back.
At a Glance
- BrandSeiko
- CollectionProspex Speedtimer
- MovementCalibre 6R55 Automatic
- Case Size39.5mm
- DialLight Blue
- BezelRotating Inner Ring
- Case MaterialStainless Steel
- GlassCurved Sapphire Crystal
- BraceletStainless Steel
- Water Resistance200 Metres
- Power ReserveApprox. 72 Hours
- LumiBriteHands & Hour Markers
Why You'll Love It
- Three days of running from a full wind, so it keeps time through a weekend in a drawer.
- Light blue on steel is the brighter of the two executions, and the inner ring keeps the outer case line uninterrupted.
- The ring turns inside the crystal rather than around the case edge, so there is no knurled bezel to catch on a cuff.
- LumiBrite on the hands and hour markers, charged by light.
- A 200-metre case behind curved sapphire, closed with a screw case back.
Key Features
- Calibre 6R55 automatic movement — winding from the movement of the wearer with hand winding available, and a power reserve of approximately 72 hours.
- Rotating inner ring — set inside the crystal rather than around the outside of the case.
- Light blue dial with LumiBrite on the hands and hour markers — and a date on the dial.
- Screw case back under curved sapphire — closing a 39.5mm stainless steel case carrying a 200-metre water resistance rating.
- Stainless steel bracelet — with a pull-out crown on the case.
Technical Specifications
| Model Number | HBC003J1 |
|---|---|
| Case Material | Stainless Steel |
| Case Diameter | 39.5mm |
| Case Colour | Silver |
| Glass | Curved Sapphire Crystal |
| Case Back | Screw Case Back |
| Crown | Pull Out |
| Bezel | Rotating Inner Ring |
| Water Resistance | 200 Metres |
| Colour | Light Blue |
|---|---|
| Hand Indicators | Hour, Minute, Seconds |
| Calendar | Date |
| LumiBrite | Hands & Hour Markers |
| Material | Stainless Steel |
|---|---|
| Colour | Silver |
| Calibre | Seiko 6R55 |
|---|---|
| Type | Automatic — Powered By The Movement Of The Wearer |
| Function | Analogue — 3 Hands |
| Display | Analogue |
| Hand Winding | Yes |
| Power Reserve | Approx. 72 Hours |
Frequently Asked Questions
How long will it run if I take it off?
About three days. Calibre 6R55 holds approximately 72 hours from a full wind, so a watch set down after work on Friday is usually still running on Monday. A movement holding around 40 hours would have stopped by Sunday morning.
Do I need to wind it by hand?
Not usually — wearing it winds it. Hand winding is available through the crown and is the fastest way to start it once it has stopped. Letting a mechanical watch run down causes no harm; wind it, set the time and date, and carry on.
What is the ring inside the crystal?
A rotating inner ring, turned from the case rather than from a bezel around the outside. Seiko publishes that it rotates but does not specify what scale is printed on it for this reference, so check the watch itself.
Is it a diver's watch?
No. The case is rated to 200 metres, but Seiko does not give this reference its Diver's designation and the crown pulls out rather than screwing down. Treat the figure as water resistance rather than diving permission, keep it away from scuba use, and do not operate the crown while the watch is wet.
Which part screws down, the crown or the case back?
The case back. Seiko publishes a screw case back and a pull-out crown, which are two different things — the back threads into the case, the crown does not. It is worth knowing because an open crown is the usual route for water to reach a movement.
Can I read it in the dark?
Yes. LumiBrite is applied to the hands and hour markers. It charges from light and dims gradually through the night rather than holding a steady brightness.
Is the bracelet adjustable?
Yes. Links can be added or removed to size the stainless steel bracelet. City Chain offers complimentary bracelet sizing at any outlet — bring your warranty book along for the 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 Complimentary sizing in store
Calibre Type: Automatic - Powered By The Movement Of The Wearer
Calibre Function: Analogue - 3 Hands
Power Reserve/Battery Life: Approx. 72 Hours Power Reserve
Battery: N/A
Calibre Number: 6R55
Display: Analogue
Water Resistance: 200 Metres
Case Material: Stainless steel
Case Size (Diameter): 39.5mm
Case Color: Silver
Band/Bracelet: Bracelet - Stainless Steel
Band Color: Silver
Glass Material: Curved sapphire crystal
Crown: Pull Out
Rotating Bezel: Rotating Inner Ring
Dial Color: Light Blue
Hand Indicators: Hour, Minute, Seconds
Calendar Indicators: Date
Lumibrite: Hands & Hour Markers
Hand Winding Capability: Yes
Screw case back: 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.
