Seiko Prospex Samurai SRPL51
The 2025 Samurai with a blue dial on a steel bracelet: ISO 6425 200 m diver with the 4R35 automatic and a screw-down crown. Seiko's US listing does not state the crystal type or case width for this reference, so neither is scored.
In stock · sold by OutdoorEquipped. Price as of November 3, 2026, 18:15 UTC.
What you get
Published manufacturer specifications. Fields we could not verify are left out rather than guessed.
How the 72 spec points add up
Value Score = 100 × √(spec points per dollar ÷ the best ratio among automatic dive watches in stock on Amazon today). Full methodology.
Compared with other automatic dive watches
Same type, other model families, verified Amazon prices today. See the full Automatic Dive Watches ranking →
| # | Watch | Movement | Crystal | Water res. | Case diameter × lug-to-lug | Fits wrist | Spec pts | Price | Value Score | Buy |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Automatic (Seiko NH35) | Mineral | 200 m | 40 × 48 mm | ≥ 17.3 cm (6.8″) | 77 | $88.00third-party | 100 | Amazon |
| 2 |  | Automatic (F6922) | Mineral | 200 m | 41.5 × 47 mm | ≥ 16.9 cm (6.7″) | 76 | $213.15third-party | 64 | Amazon |
| 3 |  | Automatic (F6922) | Mineral | 200 m | 41.5 × 47 mm | ≥ 16.9 cm (6.7″) | 76 | $225.20third-party | 62 | Amazon |
| 4 |  | Automatic (F6922) | Sapphire | 200 m | 41.8 × 46.8 mm | ≥ 16.8 cm (6.6″) | 83 | $252.60third-party | 61 | Amazon |
| 5 |  | Automatic (F6922) | Sapphire | 200 m | 40 mm | — | 83 | $257.04third-party | 61 | Amazon |
| 6 | Automatic (4R35) | — | 200 m ISO | — | — | 72 | $476.00third-party | 42 | Amazon | |
| 7 |  | Automatic (Powermatic 80) | Sapphire | 300 m | 40 mm | — | 90 | $875.00 | 34 | 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 Prospex Samurai SRPL51
Questions about the Seiko Prospex Samurai SRPL51
How much does the Seiko Prospex Samurai SRPL51 cost on Amazon?
What is the Value Score of the Seiko Prospex Samurai SRPL51?
What wrist size fits the Seiko Prospex Samurai SRPL51?
What are alternatives to the Seiko Prospex Samurai SRPL51?
22 mm straps that fit the Seiko Prospex Samurai SRPL51
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 $500
- This listing is below its list price today: all watches below list price
- What the water-resistance rating actually permits
- Lug width and strap sizing
- Automatic vs solar vs quartz: accuracy and running cost
- Watch gift guide by budget and recipient
- Buying a watch on Amazon: sellers, warranty, returns