Seiko Prospex Turtle SRPE99
The cushion-cased Turtle in blue on a steel bracelet: ISO 6425 certified 200 m diver with the 4R36 automatic, screw-down crown and Hardlex crystal. 45 mm across but only 48 mm lug-to-lug, so it wears smaller than the number suggests.
In stock · sold by Fresh Pearl. Price as of November 3, 2026, 18:15 UTC.
Will the Seiko Prospex Turtle SRPE99 fit your wrist?
Enter your wrist circumference. The drawing scales the case (45 mm across, 48 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 81 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 (4R36) | Hardlex | 200 m ISO | 45 × 48 mm | ≥ 17.3 cm (6.8″) | 81 | $485.00third-party | 44 | 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 Turtle SRPE99
Questions about the Seiko Prospex Turtle SRPE99
How much does the Seiko Prospex Turtle SRPE99 cost on Amazon?
What is the Value Score of the Seiko Prospex Turtle SRPE99?
What wrist size fits the Seiko Prospex Turtle SRPE99?
What are alternatives to the Seiko Prospex Turtle SRPE99?
22 mm straps that fit the Seiko Prospex Turtle SRPE99
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
- 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