The Seiko 5 Sports SRP363K1 is a bold everyday automatic with a black dial, yellow-toned hands, and a black ion-plated stainless steel case and bracelet. It keeps the classic Seiko 5 Sports brief: automatic movement, day-date, solid water resistance, and a tool-watch layout that works from the office to weekends without fuss.
If you want a darker sports look with a clear pop of colour on the hands, this reference is an easy shortlist. The unidirectional bezel and LumiBrite-style luminous hands and markers keep it practical after dark, while the exhibition case back shows the automatic movement at work.
Why the SRP363K1 stands out
- High-contrast dial: black face with yellow-tone hands and silver hour markers for quick reading.
- Calibre 4R36 automatic: self-winding with manual wind and hacking seconds, day-date at 3 o’clock, about 41 hours power reserve, 24 jewels.
- Sports case and bracelet: black IP stainless steel case and bracelet with a deployment clasp for a tougher look than bare polished steel.
- Hardlex crystal: Seiko’s reinforced mineral glass, well suited to daily knocks.
- 100 m water resistance: fine for rain, swimming, and active days (not a saturation dive instrument).
- Unidirectional rotating bezel: simple elapsed-time timing for sport and travel.
Who it suits
Buyers who like Seiko 5 Sports for value and reliability, and want a black-on-black sports package with yellow accents rather than a bright multi-colour dial. The larger sports case (about 43 mm diameter, about 13 mm thick on this listing’s specs) wears as a proper sports watch; 22 mm lugs make strap swaps straightforward if you later prefer leather or NATO.
Specifications
- Brand: Seiko
- Collection: 5 Sports
- Reference / SKU: SRP363K1 (SRP363)
- Movement: Seiko calibre 4R36 automatic (hand-wind, hacking seconds)
- Jewels: 24
- Power reserve: approx. 41 hours
- Functions: hours, minutes, central seconds, day and date
- Case: stainless steel with black ion plating
- Case diameter: 43 mm
- Case thickness: 13 mm
- Crystal: Hardlex
- Case back: exhibition (screw-down style transparent back)
- Bezel: unidirectional rotating
- Dial: black with yellow-tone hands and silver markers; luminous hands and markers
- Bracelet: stainless steel with black ion plating; deployment clasp
- Lug / band width: 22 mm
- Water resistance: 100 m / 10 bar
- Gender: men’s sports watch sizing
Buying the SRP363K1 in Australia
Chronospride stocks authentic Seiko pieces for Australian buyers who want clear specs, inspected stock, and straightforward local support. This page is for the black/yellow SRP363K1 sports automatic—not a dress Seiko 5 or a Prospex professional diver.
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.
Frequently asked questions
What movement does the Seiko SRP363K1 use?
It uses Seiko’s calibre 4R36 automatic: self-winding, manual winding, hacking seconds, day-date display, 24 jewels, and roughly 41 hours of power reserve when fully wound.
What is the water resistance of the SRP363K1?
100 metres (10 bar). That covers swimming and heavy rain. Rinse after salt water, and have gaskets checked periodically if you swim often. It is not a professional diver’s watch.
Is the SRP363K1 a good everyday watch?
Yes for many wearers. The automatic movement needs no battery, the Hardlex crystal and steel bracelet suit daily use, and the black IP finish hides scuffs better than bright polish for some owners. Size is sports-oriented; try on or check wrist photos if you prefer under-40 mm cases.
Does the SRP363K1 have a day-date window?
Yes. Day and date sit at 3 o’clock, in line with the classic Seiko 5 Sports layout.
What crystal is on the SRP363K1?
Hardlex, Seiko’s reinforced mineral crystal. It is tougher than standard mineral for daily wear; it is not sapphire.
Where can I buy the Seiko SRP363K1 in Australia?
You can buy this reference from Chronospride with Australian dispatch on in-stock pieces, inspected before shipping, and Chronospride’s 12 months warranty handled by our team (terms apply).
| Brand | Seiko |
|---|---|
| Lug-Width | 22mm |
| Case Thickness | 13mm |
| MPN | SRP363K1 |
| Gender | Men's |
| Band-Material | Stainless Steel |
| Case-Material | Stainless Steel |
| Movement | Automatic |
| Case-Size | 43mm |
| Band-Width | 22mm |
| Band-Colour | Black |
| UPC | 4954628160553 |
| EAN | 4954628160553 |
| Calibre | 4R36 |
| Case-Colour | Black |
| Face-Colour | Black |
| Jewels | 24 |
| Power reserve | 41 hours |
| Watch-Shape | Round |
| Water-Resistance-Rating | 100M |