Seiko 5 Sports SRPD (42.5 mm)
Price as of November 2026: $280.00 on Amazon (SRPD55) against a manufacturer list price of $350, a 20% gap today. The list price is the brand's published US figure, not a past Amazon price; we keep no price history.
The SKX-style 5 Sports in black dial, black bezel: 42.5 mm steel case on a bracelet, 4R36 automatic with hacking and hand-winding, Hardlex crystal, 100 m water resistance and a see-through caseback. The crown does not screw down, so treat it as a sports watch rather than a diver.
In stock · sold by OutdoorEquipped. Price as of November 3, 2026, 18:15 UTC.
6 versions of the Seiko 5 Sports SRPD (42.5 mm)
Same case and movement, different dial, bezel or strap. Each line is its own Amazon listing with its own price today; the strap variants earn fewer spec points than the bracelet. 4 variants share the same price and score today; SRPD55 is shown first because it is listed first in our catalog, not because it is better.
| Reference | Dial / strap | Strap | Spec pts | Price | Value Score | Sales rank | Buy |
|---|---|---|---|---|---|---|---|
SRPD55 Best value | Black dial, black bezel, bracelet | Steel | 68 | $280.00third-party | 100 | #54 | Amazon |
 SRPD51 | Blue sunray dial, bracelet | Steel | 68 | $280.00third-party | 100 | #54 | Amazon |
 SRPD63 | Forest green dial, bracelet | Steel | 68 | $280.00third-party | 100 | #54 | Amazon |
 SRPD79 | Black dial, black case, nylon strap | Nylon | 65 | $300.00third-party | 94 | #425 | Amazon |
 SRPD53 | Blue dial, blue/red bezel, bracelet | Steel | 68 | — | — | #1,290 | |
 SRPD59 | Orange sunray dial, bracelet | Steel | 68 | $280.00third-party | 100 | #54 | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details.
Will the Seiko 5 Sports SRPD (42.5 mm) fit your wrist?
Enter your wrist circumference. The drawing scales the case (42.5 mm across, 46 mm lug-to-lug) against the flat top of a wrist that size, using the 3.6× lug-to-lug rule from our fit guide. Needs JavaScript; the rule itself is on the fit guide.
What you get
Published manufacturer specifications. Fields we could not verify are left out rather than guessed.
How the 68 spec points add up
Value Score = 100 × √(spec points per dollar ÷ the best ratio among automatic sport watches in stock on Amazon today). Full methodology.
Compared with other automatic sport watches
Same type, other model families, verified Amazon prices today. See the full Automatic Sport & Everyday Watches ranking →
| # | Watch | Movement | Crystal | Water res. | Case diameter × lug-to-lug | Fits wrist | Spec pts | Price | Value Score | Buy |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | | Automatic (4R36) | Hardlex | 100 m | 42.5 × 46 mm | ≥ 16.6 cm (6.5″) | 68 | $280.00third-party | 100 | Amazon |
| 2 |  | Automatic (8210) | Mineral | 50 m | 40 mm | — | 58 | $356.25 | 82 | Amazon |
| 3 | Automatic (Sistem51) | — | 30 m | 42 mm | — | 41 | $275.00 | 78 | Amazon | |
| 4 | Automatic (Miyota 821A) | Mineral | 100 m | 45 mm | — | 58 | $440.00 | 74 | Amazon | |
| 5 |  | Automatic (Powermatic 80) | Sapphire | 100 m | 35 × 39.5 mm | ≥ 14.2 cm (5.6″) | 76 | $795.00 | 63 | Amazon |
| 6 |  | Automatic (Powermatic 80) | Sapphire | 100 m | 40 × 44.5 mm | ≥ 16 cm (6.3″) | 76 | $850.00 | 61 | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details. third-party = sold by a marketplace seller, not Amazon (warranty may differ); ships later = not in stock today, never crowned best value.
Comparisons with the Seiko 5 Sports SRPD55
Questions about the Seiko 5 Sports SRPD (42.5 mm)
How much does the Seiko 5 Sports SRPD (42.5 mm) cost on Amazon?
What is the Value Score of the Seiko 5 Sports SRPD (42.5 mm)?
What wrist size fits the Seiko 5 Sports SRPD (42.5 mm)?
What are alternatives to the Seiko 5 Sports SRPD (42.5 mm)?
22 mm straps that fit the Seiko 5 Sports SRPD (42.5 mm)
The lug width is 22 mm, so any 22 mm strap fits. These are the straps we list for that width; see the lug width chart for every size and the accessories page for winders, boxes and tools. Full picks with buying notes: Best 22 mm watch straps.
| Item | Kind | Lug width | Price | Buy |
|---|---|---|---|---|
 BISONSTRAP hand-stitched leather, quick release, 22 mm Entry-price leather with quick-release pins. | Leather strap | 22 mm | $14.99third-party | Amazon |
 Berfine oil-tanned pull-up leather, quick release, 22 mm Vintage-look pull-up leather. | Leather strap | 22 mm | $19.98third-party | Amazon |
 Archer military-style nylon, 22 mm, black Heavy nylon; fits Seiko 5 Sports and Kamasu. | Nylon / NATO strap | 22 mm | $19.99third-party | Amazon |
 ANNEFIT one-piece nylon, 22 mm One-piece pass-through strap; adds ~2 mm height. | Nylon / NATO strap | 22 mm | $12.99third-party | Amazon |
 StrapHabit FKM rubber, quick release, 22 mm Fluororubber; the usual replacement for the Casio Duro's resin strap. | Rubber strap | 22 mm | $38.95third-party | Amazon |
 WOCCI ventilated FKM rubber, 22 mm Vented FKM; cooler on the wrist in summer. | Rubber strap | 22 mm | $20.99third-party | Amazon |
 WOCCI 316L steel bracelet, double-locking clasp, 22 mm Inexpensive solid steel bracelet. | Steel bracelet | 22 mm | $28.99third-party | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details. Accessories have no Value Score; they are listed for fit, not ranked.
Guides that apply to this watch
- Ranked among watches under $300
- This listing is below its list price today: all watches below list price
- What the water-resistance rating actually permits
- Sapphire vs Hardlex vs mineral: what the crystal changes
- Lug width and strap sizing
- Will it fit your wrist? The lug-to-lug rule
- Automatic vs solar vs quartz: accuracy and running cost
- Watch gift guide by budget and recipient
- Buying a watch on Amazon: sellers, warranty, returns