The Seiko SRP447K1 is a Superior automatic sports watch in a black-coated case and bracelet. The dial is black, with white Arabic numerals at 12, 3, 6 and 9, a pink minute track, and a compass bezel marked N, E, S and W. The dial itself is printed AUTOMATIC and 100M. It is not a 200-metre diver, and it is not a Prospex Turtle or Monster.
Who it suits
This is a large everyday sports watch. At 45mm across and 13mm thick it has presence, and the black coating plus the pink accent on the seconds hand keep it from looking like a plain field watch. One hundred metres is enough for swimming and surface water. It is not a tool you should take on a deep dive, and the bezel is a compass scale, not a standard elapsed-time dive bezel.
An older version of this page used a first-person review and claimed a 200-metre rating. That rating does not match the watch. The dial says 100M. The caseback reads water resistant 10 bar. Use those figures, not the old paragraph.
Dial, bezel and case
Hour markers are thick white bars, with Arabic numerals at the cardinal hours. A pink crosshair runs through the dial. The seconds hand is white with a pink tip. There is a single date window at about 4:30. There is no day window. If a listing mentions a day-date layout for this reference, it is describing a different watch.
The bezel is black, with white compass letters and minute numerals, and it is built as a rotating bezel with a grip edge. The crown sits under a guard and has a red ring. The case and bracelet are stainless steel with a black coating, not a polished silver case. The clasp is a three-fold fold-over, signed Seiko.
The caseback is an exhibition window. It is engraved Seiko, calibre 4R35 (movement number 4R35-00F0), twenty-three jewels, stainless steel, and water resistant 10 bar. You can see the rotor. That also settles the movement argument: this is a 4R35, not a 4R36.
Movement
Calibre 4R35 is Seiko’s workhorse automatic: 23 jewels, hand-winding, and a hacking seconds hand so you can set it against a time signal. Power reserve is about 41 hours. It is a practical movement for a watch you wear most days and take off at night. It will not match quartz accuracy, and a few seconds a day either way is normal for this grade. Do not treat a single owner’s rate as a specification.
The crystal is Hardlex, Seiko’s hardened mineral glass. It is tougher than ordinary mineral in daily wear, and it is not sapphire. If sapphire is a requirement, this is the wrong reference.
Specifications
- Brand: Seiko
- Collection: Superior
- Reference: SRP447K1 (also shortened to SRP447)
- Movement: Seiko calibre 4R35, automatic, hand-winding, hacking
- Movement number on caseback: 4R35-00F0
- Jewels: 23
- Power reserve: about 41 hours
- Dial: black, white Arabic numerals, pink minute track, date at about 4:30
- Crystal: Hardlex
- Bezel: rotating compass bezel (N, E, S, W)
- Case: black-coated stainless steel, 45mm diameter, 13mm thick
- Lug width: 22mm
- Bracelet: black-coated stainless steel, three-fold clasp
- Caseback: exhibition, engraved 10 bar
- Water resistance: 100 metres / 10 bar
Questions buyers ask
What movement does the Seiko SRP447K1 use?
Seiko calibre 4R35, confirmed on the exhibition caseback as 4R35-00F0 with twenty-three jewels. It is an automatic with hand-winding and hacking. Reserve is about 41 hours. It is not a 4R36, and it is not quartz.
What is the water resistance of the SRP447K1?
100 metres, which is 10 bar. That figure is printed on the dial as 100M and engraved on the caseback as water resistant 10 bar. An older description on this page said 200 metres. That was wrong. At 100 metres the watch is fine for swimming and surface water. It is not a saturation or professional dive rating.
Is the Seiko SRP447K1 a dive watch?
It is a sports watch with 100m water resistance and a rotating compass bezel. The bezel is marked for direction (N, E, S, W) and minutes, not as a typical unidirectional elapsed-time dive bezel. If you want a Seiko you can actually plan dives around, look at a Prospex diver with a 200m rating and a proper elapsed-time bezel. This Superior is for daily wear and the water you swim in, not for a dive computer substitute.
What size is the Seiko Superior SRP447K1?
45mm case diameter and 13mm thick, with 22mm between the lugs. That is a large men’s sports watch. The black coating and the tall bezel make it wear even more present than the millimetre count suggests. Measure your wrist if you usually wear 38 to 40mm dress watches. This will feel like a step up.
Does the SRP447K1 have a day and date?
Date only. The window sits at about 4:30, under the 4 o’clock marker area. There is no day-of-week window. Listings that mention a day display, a leather strap, or a 44mm or 47mm case are mixing this reference up with other Seiko automatics.
Where can I buy the Seiko SRP447K1 in Australia?
This black Superior reference is listed at Chronospride. Check the full code SRP447K1 before you compare prices. Nearby Superior codes change dial colour and coating. The watch on this page is the black-coated case and bracelet with the pink minute track, matching the photos.
A straightforward Seiko automatic if you want black-on-black sports styling, a compass bezel, and a movement you can see through the caseback. Read the 100-metre rating as printed. Ignore any older line on this page that said otherwise.
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 |
|---|---|
| Lug-Width | 22mm |
| Lug to lug size | 49.5mm |
| Case Thickness | 13mm |
| MPN | SRP447K1 |
| Gender | Men's |
| Band-Material | Stainless Steel |
| Case-Material | Stainless Steel |
| Movement | Automatic |
| Case-Size | 45mm |
| Band-Width | 22mm |
| Band-Colour | Black |
| UPC | 636156741131 |
| EAN | 636156741131 |
| Calibre | 4R35 |
| Case-Colour | Silver |
| Face-Colour | Black |
| Jewels | 23 |
| Power reserve | 41 hours |
| Watch-Shape | Round |
| Water-Resistance-Rating | 100M |