Cazador

Seiko · Family: Prospex

Seiko Prospex Turtle SRPE93

The Seiko Prospex SRPE93, known as the "Turtle" for its cushion-shaped case, is the current version of the diver Seiko launched in 1976 as reference 6309 and revived in 2016. A 45mm steel case, automatic Calibre 4R36 with hacking and hand-winding, day-date display, and 200 meters of Diver's-standard water resistance. Cazador has no verified price observations for this reference yet (n=0).

Specifications

Case diameter
45 mm (cushion case)
Thickness
13.3 mm
Lug to lug
47.7 mm (22 mm lug width)
Case material
Stainless steel
Movement
Seiko Calibre 4R36, automatic with hand-winding and hacking seconds, 24 jewels
Frequency
21,600 vph (3 Hz)
Power reserve
Approximately 41 hours
Water resistance
200 m, Diver's standard
Bezel
Unidirectional rotating with luminous pip at 12
Dial
Black, day-date at 3 o'clock, hands and markers with LumiBrite
Crystal
Hardlex
Strap
Black silicone

Price & trend

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History

In 1976, Seiko launched the 6309 diver with an asymmetric cushion case and crown at 4 o'clock that the community nicknamed the "Turtle": rugged, comfortable despite its width, and ubiquitous on the wrists of professional and military divers through the eighties.

Four decades later, in 2016, Seiko resurrected it within the Prospex range with the SRP777 series and its siblings, faithful to the original silhouette but with the modern 4R36 calibre, adding hacking seconds and hand-winding — two historic omissions of the house's budget automatics.

The SRPE93 is the current continuation of that reissue in its classic configuration: black dial and bezel, day-date, generous LumiBrite, and a silicone strap. It meets the 200-meter Diver's standard, with a unidirectional bezel and first-rate darkness legibility.

In Cazador's catalog it is the first pure Prospex diver, the link between the veteran SKX007 already covered and the upper tier of Japanese divers: a lot of tool watch for the money and one of the most recognizable silhouettes in sports watchmaking.

Frequently asked questions

How much does a Seiko Prospex Turtle SRPE93 cost?

Cazador has no verified price observations for this reference (0 PricePoints recorded as of today). We do not publish estimates without our own sourced market data.

Why is it called the "Turtle"?

Because of its cushion-shaped case with rounded flanks, which from above resembles a turtle shell. The nickname was born with the 1976 reference 6309 and carries over to its reissues.

Is it a certified diver?

Yes, it meets the 200-meter Diver's standard: unidirectional bezel, total-darkness legibility, and water resistance tested for recreational scuba diving.

What does the 4R36 add over the SKX007's 7S26?

Hacking seconds for time-syncing and hand-winding via the crown, plus day and date. It beats at 21,600 vph with about 41 hours of reserve.

Does the 45mm case wear well?

Better than the number suggests: lug-to-lug is only 47.7mm thanks to the cushion shape, so it sits like many 42mm watches.

Since when has Seiko made dive watches?

Since 1965, when it launched Japan's first diver (the 62MAS); the Prospex range now groups all its professional sea, land, and air watchmaking.

Related references