SeikoProspex Turtle PADI
In the photo: a Turtle of another reference. A licensed sample image; the official one will replace it. Header: a Seiko Prospex on the wrist.
Indicative price band. The exact price is on Amazon.
See price on Amazon- An ISO 6425 diver with a cushion case: it measures 45 mm, but the 47.7 mm lug-to-lug makes it surprisingly wearable.
- 4R36 movement with 41 h of power reserve at 21,600 bph.
- Hacking seconds and hand winding.
- Hardlex crystal and 200 m water resistance.
- 45 mm diameter, 13.4 mm thick and — lug-to-lug.
Affiliate link: if you buy, Amazon pays Calibrario a commission and you pay the same. Availability on Amazon.es checked on 21 October 2026.
In figures
Will it fit your wrist?
Move the slider to your wrist circumference. Seen from above, your wrist is roughly a third of that wide; if the lug-to-lug is wider, the watch overhangs.
With a 17 cm circumference, your wrist is about 56 mm wide.
Specifications
Movement
| Movement | 4R36 |
|---|---|
| Movement maker | Seiko |
| Power reserve | 41 h |
| Beat rate | 21,600 bph |
| Hacking seconds | Yes |
| Hand winding | Yes |
Case and crystal
| Diameter | 45 mm |
|---|---|
| Thickness | 13.4 mm |
| Lug-to-lug | — |
| Case | Steel |
| Crystal | Hardlex |
| Water resistance | 200 m |
| Rotating bezel | Yes, unidirectional, 120 clicks |
| Display caseback | No |
Strap and dial
| Lug width | 22 mm |
|---|---|
| Strap or bracelet | Steel bracelet |
| Dial | Blue |
| Complications | Day and date |
Buying
| Indicative price band | €390–440 |
|---|---|
| Style | Dive |
| Brand origin | Japan |
Data checked against the manufacturer’s official website on 21 October 2026. A dash means the manufacturer does not publish that figure.
Sources: seikowatches.com, seikowatches.com
The movement
Seiko’s workhorse automatic: 24 jewels, 41 hours, hacking seconds and hand winding.
Against its rivals
| Figure | Seiko Prospex Turtle PADI | Seiko 5 Sports | Seiko Prospex King Samurai PADI |
|---|---|---|---|
| Indicative price band | €390–440 | €285–320 | €530–580 |
| Movement | 4R36 | 4R36 | 4R35 |
| Power reserve | 41 h | 41 h | 41 h |
| Beat rate | 21,600 bph | 21,600 bph | 21,600 bph |
| Crystal | Hardlex | Hardlex | Sapphire |
| Water resistance | 200 m | 100 m | 200 m |
| Diameter | 45 mm | 42.5 mm | 43.8 mm |
| Thickness | 13.4 mm | 13.4 mm | 12.8 mm |
| Lug-to-lug | — | 46 mm | 48.7 mm |
| Hacking seconds | Yes | Yes | Yes |
| Hand winding | Yes | Yes | Yes |
| Rotating bezel | Yes | Yes | Yes |
| Strap or bracelet | Steel bracelet | Steel bracelet | Silicone strap |
| Brand origin | Japan | Japan | Japan |
| See price on AmazonSee specs | See price on AmazonSee specs | See price on AmazonSee specs |
Watches of the same style with the nearest price band. In red, the best figure in each row.
Comparisons
Making sense of the specs
Power reserveHow long it keeps running off the wrist, and why 80 hours changes daily life.Read the guide 
Sapphire, Hardlex or mineralWhich crystal scratches, which chips and which is worth it.Read the guide Frequently asked questions
Which movement does the Seiko Prospex Turtle PADI use?
The 4R36, from the Seiko 4R (4R34, 4R35, 4R36 and 4R38) family, made by Seiko. It gives 41 h of power reserve at 21,600 bph.
Does it have hacking seconds and hand winding?
The seconds hand stops when you pull the crown, and it can be wound by hand by turning it.
Can you swim or dive with it?
It is water resistant to 200 m: fine for swimming and diving. For scuba diving, check that the model meets ISO 6425.
What size wrist does it suit?
There is no lug-to-lug figure for this model.