Gear guide
Best Seiko dive watches: Turtle, Monster, Samurai and 5 Sports
Picked from Amazon listings, not hands-on tests. How we pick
Top picks at a glance
Compare all picks
Closest match for the job
Seiko Prospex Turtle SRPF77: 45 mm, sapphire
Wide 45 mm case with a short 47.7 mm case height, so it wears big without overhanging.
See price on AmazonSee it on Amazon
Most for the money on paper
Seiko 5 Sports SRPD59: 4R36, 100 m, rotating bezel
100 m water resistance and a unidirectional rotating bezel are stated on the listing.
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Most complete listing
Seiko Prospex SRPL11: 41.7 mm, 49.5 mm lug to lug
Rated to 200 m for diving with a screw-down crown and screw case back, according to the listing.
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Seiko makes divers at almost every price, and the names can be confusing. The Prospex line holds the ISO-rated 200 m divers like the Turtle, Monster and Samurai families. The 5 Sports line has the dive look with 100 m water resistance. Inside the case, most of these share the same 4R family: the 4R35 with date only, or the 4R36 with day and date, both with about 41 hours of reserve where stated. So the real differences are case size, lug to lug, crystal (Hardlex or sapphire) and bezel. This guide sorts eight Seiko divers from 41.7 mm to 45 mm and lists every size the listing gives. Where a listing skips lug to lug or thickness, it says Not stated. Prices run from $315 to $1,045, and only listing facts are used.
Compare the picks
- Seiko Prospex Turtle SRPF77: 45 mm, sapphire
- Case size
- 45.0 mm
- Lug to lug
- 47.7 mm (listed case height)
- Thickness
- 13.2 mm
- Movement
- 4R36 automatic
- Seiko 5 Sports SRPD59: 4R36, 100 m, rotating bezel
- Case size
- Not stated
- Lug to lug
- Not stated
- Thickness
- Not stated
- Movement
- 4R36 automatic
Seiko Prospex SRPK01 PADI: 45 mm, ceramic bezel- Case size
- 45 mm
- Lug to lug
- Not stated
- Thickness
- Not stated
- Movement
- 4R36 automatic
- Seiko Prospex SRPL11: 41.7 mm, 49.5 mm lug to lug
- Case size
- 41.7 mm
- Lug to lug
- 49.5 mm
- Thickness
- 12.3 mm
- Movement
- 4R35 automatic
Seiko Prospex SRPF03: 43.8 mm, 4R35, bracelet- Case size
- 43.8 mm
- Lug to lug
- Not stated
- Thickness
- Not stated
- Movement
- 4R35 automatic
Seiko Prospex SRPJ93 PADI: 4R35, sapphire, ceramic- Case size
- Not stated
- Lug to lug
- Not stated
- Thickness
- Not stated
- Movement
- 4R35 automatic
Seiko Prospex Monster SRPG57: 42.4 mm, steel bracelet- Case size
- 42.4 mm
- Lug to lug
- 49.4 mm (listed case height)
- Thickness
- 13.4 mm
- Movement
- 4R36 automatic
Seiko Prospex King Samurai SRPH43: 43.8 mm, sapphire- Case size
- 43.8 mm
- Lug to lug
- Not stated
- Thickness
- 12.8 mm
- Movement
- 4R35 automatic
| Pick | Case size | Lug to lug | Thickness | Movement | Price | Link |
|---|---|---|---|---|---|---|
| Seiko Prospex Turtle SRPF77: 45 mm, sapphire | 45.0 mm | 47.7 mm (listed case height) | 13.2 mm | 4R36 automatic | - | Amazon |
| Seiko 5 Sports SRPD59: 4R36, 100 m, rotating bezel | Not stated | Not stated | Not stated | 4R36 automatic | - | Amazon |
| Seiko Prospex SRPK01 PADI: 45 mm, ceramic bezel | 45 mm | Not stated | Not stated | 4R36 automatic | - | Amazon |
| Seiko Prospex SRPL11: 41.7 mm, 49.5 mm lug to lug | 41.7 mm | 49.5 mm | 12.3 mm | 4R35 automatic | - | Amazon |
| Seiko Prospex SRPF03: 43.8 mm, 4R35, bracelet | 43.8 mm | Not stated | Not stated | 4R35 automatic | - | Amazon |
| Seiko Prospex SRPJ93 PADI: 4R35, sapphire, ceramic | Not stated | Not stated | Not stated | 4R35 automatic | - | Amazon |
| Seiko Prospex Monster SRPG57: 42.4 mm, steel bracelet | 42.4 mm | 49.4 mm (listed case height) | 13.4 mm | 4R36 automatic | - | Amazon |
| Seiko Prospex King Samurai SRPH43: 43.8 mm, sapphire | 43.8 mm | Not stated | 12.8 mm | 4R35 automatic | - | Amazon |
Facts are taken from each Amazon listing. Prices are checked daily and shown with their date.
The picks in detail
Pick 1 · SEIKO
Seiko Prospex Turtle SRPF77: 45 mm, sapphire
See price on AmazonA 45 mm Turtle diver with a 47.7 mm case length, sapphire crystal and 22 mm lug width. The listing states it fits wrists up to about 8.1 inches.
What the listing offers
- Wide 45 mm case with a short 47.7 mm case height, so it wears big without overhanging.
- Sapphire crystal and 200 m diving water resistance, per the listing.
- The listing states a maximum wrist circumference of about 8.1 inches (205 mm).
Limits to know
- The day-date language mix arrives at random, the listing says, so it cannot be chosen.
- Silicone strap only, with no bracelet included.
Pick 2 · SEIKO
Seiko 5 Sports SRPD59: 4R36, 100 m, rotating bezel
See price on AmazonAn SRPD with an orange sunray dial on a steel bracelet. The listing states the 4R36, day/date, LumiBrite hands and markers, a unidirectional bezel and 100 m water resistance.
What the listing offers
- 100 m water resistance and a unidirectional rotating bezel are stated on the listing.
- LumiBrite on hands and markers per the listing for low-light reading.
- A see-through skeleton case back and steel bracelet are stated.
Limits to know
- Case size is not stated on this listing, though other SRPD listings state 42.5 mm.
- The listing does not state the crystal type.
Pick 3 · SEIKO
Seiko Prospex SRPK01 PADI: 45 mm, ceramic bezel
See price on AmazonA 45 mm Prospex PADI Special Edition diver. The listing states the 4R36 with day/date, 200 m with screw-down crown and case back, sapphire, a ceramic bezel display and LumiBrite.
What the listing offers
- The listing rates it for diving to 200 m, with a screw-down crown and screw case back.
- Sapphire with inner anti-reflective coating and a ceramic bezel display, per the listing.
- LumiBrite on hands, indexes and bezel is stated for low-light reading.
Limits to know
- The 45 mm case per the listing will be large on small wrists.
- 41-hour reserve per the listing is about half of the Mido or Hamilton.
Pick 4 · SEIKO
Seiko Prospex SRPL11: 41.7 mm, 49.5 mm lug to lug
See price on AmazonA full Prospex dive watch with a 4R35 movement and 200 m diver's rating. The listing gives every key dimension, including 12.3 mm thickness and 49.5 mm lug to lug, so fit is easy to judge.
What the listing offers
- Rated to 200 m for diving with a screw-down crown and screw case back, according to the listing.
- The 4R35 hand-winds, has a stop-second function and about 41 hours of power reserve, per the listing.
- LumiBrite on hands, indexes and bezel is stated, which helps in low light.
Limits to know
- At 49.5 mm lug to lug it is the longest case here, so smaller wrists may see overhang.
- Hardlex crystal is harder than mineral glass but still not sapphire.
Pick 5 · SEIKO
Seiko Prospex SRPF03: 43.8 mm, 4R35, bracelet
See price on AmazonA Prospex Special Edition diver that the listing calls ISO scuba approved to 200 m. It pairs the 4R35 with LumiBrite hands and markers in a 43.8 mm steel case and bracelet.
What the listing offers
- The listing states ISO scuba approval to 200 meters.
- LumiBrite hands and markers are stated for low-light legibility.
- The 4R35 movement has a 41 hour power reserve, according to the listing.
Limits to know
- At 43.8 mm it wears large, and lug to lug length is not stated.
- Crystal type and bezel details are not stated on this listing.
Pick 6 · SEIKO
Seiko Prospex SRPJ93 PADI: 4R35, sapphire, ceramic
See price on AmazonA blue PADI Special Edition Prospex diver on a silicone band. The listing states the 4R35 with 23 jewels, 200 m, screw-down crown, sapphire and a ceramic bezel display.
What the listing offers
- 200 m diver's rating with screw-down crown and screw case back, per the listing.
- Sapphire with inner anti-reflective coating and a ceramic bezel display are stated.
- Hand-winding and a stop-second function are stated for the 4R35.
Limits to know
- Case size is not stated on this listing.
- It ships on a silicone band per the listing, not a bracelet.
Pick 7 · SEIKO
Seiko Prospex Monster SRPG57: 42.4 mm, steel bracelet
See price on AmazonA Save the Ocean Monster diver with a 42.4 mm case, 49.4 mm case height and steel bracelet. A bold diver for a broad wrist under $650.
What the listing offers
- 49.4 mm case height gives a long footprint that suits a large wrist.
- Caliber 4R36 with hand winding, hacking seconds and day-date, per the listing.
- Stainless steel case and bracelet with 200 m water resistance.
Limits to know
- Hardlex crystal, not sapphire, on a $625 watch.
- Calendar language is bilingual and cannot be specified, the listing says.
Pick 8 · SEIKO
Seiko Prospex King Samurai SRPH43: 43.8 mm, sapphire
See price on AmazonA King Samurai diver in a 43.8 mm by 12.8 mm case with anti-reflective sapphire. The Samurai pick, though priced well above the other 4R35 models.
What the listing offers
- Anti-reflective sapphire with cyclops lens, per the listing.
- Case measures 43.8 mm by 12.8 mm, slimmer than the Turtle and Monster.
- Caliber 4R35 with hand winding and about 41 hours of reserve.
Limits to know
- $1,045 for the same 4R35 movement as the $476 SRPL11.
- Lug to lug and strap type are not stated.
Read before you buy
- What is Seiko 5 and why is it called thatSeiko 5 is named for five attributes: automatic winding, day-date, water resistance, a recessed 4 o'clock crown and a durable case. Here is what today's line offers.
- What makes a real dive watch: ISO 6425 explainedISO 6425 sets the tests a watch must pass to say DIVER'S on the dial: at least 100 m, an overpressure test, a timing bezel, night legibility and more.
- Watch lume explained: LumiBrite, Super-LumiNova and how to charge itHow watch lume works, LumiBrite vs Super-LumiNova vs tritium, why some dials glow all night and others fade fast, and how to charge lume properly.
- Seiko vs Citizen automaticsSeiko vs Citizen automatic watches compared lineup by lineup, from Seiko 5 vs Tsuyosa to Prospex vs Promaster divers, using listing specs only.
- Seiko 5 Sports vs ProspexSeiko 5 Sports vs Prospex compared: diver's ratings, screw-down crowns, crystals and movements, using real SRPD59, SRPK01 and SRPL11 listings.
More gear: Dive watches
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