Seiko Save The Ocean

In 2018 Seiko introduces a line of diving watches called “Save The Ocean”, which donate a portion of the proceeds to organizations that study and preserve the oceans.

One such organization is the Ocean Learning Center of Fabien Cousteau, grandson of the famous underwater explorer Jacques-Yves Cousteau, with whom Seiko has collaborated on various initiatives.

Since the launch of the first models, Seiko has introduced new Save The Ocean watches every year, inspired by different scenarios of the oceans and the animals that populate them.

Humpback Whale

The Save The Ocean series debuts in 2018 with a design inspired by the streaks of humpback whales and the colors of the depths of the ocean.

The first four models, with a stainless steel case, are followed by three other versions with a dark PVD case.

Turtle Save The Ocean

Ref: SRPC91 (4R36-05H0)
Caliber: 4R36

45mm stainless steel case, Hardlex crystal, screw-down crown, 24 jewels, 41 hours power reserve, 21,600 bph, manual winding, hacking function.

Samurai Save The Ocean

Ref: SRPC93 (4R35-01X0)
Caliber: 4R35

44mm stainless steel case, Hardlex crystal, screw-down crown, 23 jewels, 41 hours of power reserve, 21.600 bph, manual winding, hacking.

Solar Chrono Save The Ocean

Ref: SSC675 (V175-0AD0)
Caliber: V175

43mm stainless steel case, Hardlex crystal, screw-down crown, solar, ±15 seconds/month.

Solar Tuna STO

Ref: SNE518 (V157-0CX0)
Caliber: V157

46mm stainless steel case, Hardlex crystal, screw-down crown, solar, ±15 seconds/month.

Black Turtle Save The Ocean

Ref: SRPD11 (4R36-05H0)
Caliber: 4R36

45mm stainless steel case, Hardlex crystal, screw-down crown, 24 jewels, 41 hours power reserve, 21,600 bph, manual winding, hacking function.

Black Samurai Save The Ocean

Ref: SRPD09 (4R35-01X0)
Caliber: 4R35

44mm stainless steel case, Hardlex crystal, screw-down crown, 23 jewels, 41 hours of power reserve, 21.600 bph, manual winding, hacking.

Black Solar Chrono Save The Ocean

Ref: SBDL057 (V175-0AD0)
Caliber: V175

43mm stainless steel case, Hardlex crystal, screw-down crown, solar, ±15 seconds/month.

Great White Shark

In 2019, new Save The Ocean models are introduced, inspired by the great white shark, whose fin can be glimpsed among the waves of the rough sea on the dial.

Turtle STO Great White Shark

Ref: SRPD21 (4R36-07D0)
Caliber: 4R36

45mm stainless steel case, Hardlex crystal, screw-down crown, 24 jewels, 41 hours power reserve, 21,600 bph, manual winding, hacking function.

Samurai STO Great White Shark

Ref: SRPD23 (4R35-03G0)
Caliber: 4R35

44mm stainless steel case, Hardlex crystal, screw-down crown, 23 jewels, 41 hours of power reserve, 21.600 bph, manual winding, hacking.

Solar Chrono STO Great White Shark

Ref: SSC741 (V175-0EV0)
Caliber: V175

43mm stainless steel case, Hardlex crystal, screw-down crown, solar, ±15 seconds/month.

The three initial models (Turtle, Samurai and Solar Chrono) are joined by two other editions: a King Turtle and a fourth generation Monster.

King Turtle Save The Ocean

Ref: SRPE07 (4R36-06Z0)
Caliber: 4R36

45mm stainless steel case, sapphire crystal, screw-down crown, 24 jewels, 41 hours power reserve, 21,600 bph, manual winding, hacking function.

Monster Save The Ocean

Ref: SBDY045 (4R36-08C0)
Caliber: 4R36

42mm stainless steel case, Hardlex crystal, screw-down crown, 24 jewels, 40 hours of power reserve, 21,600 bph, manual winding, hacking.

Manta Ray

2020 sees the introduction of the Manta Ray models, King Turtle and King Samurai, subsequently proposed in a different color and with silicone straps.

King Turtle STO Manta Ray

Ref: SRPE39 (4R36-06Z0)
Caliber: 4R36

45mm stainless steel case, sapphire crystal, screw-down crown, 24 jewels, 41 hours power reserve, 21,600 bph, manual winding, hacking function.

King Samurai STO Manta Ray

Ref: SBDY065 (4R35-03W0)
Caliber: 4R35

44mm stainless steel case, sapphire crystal, screw-down crown, 23 jewels, 41 hours of power reserve, 21.600 bph, manual winding, hacking.

King Turtle STO Manta Ray 2

Ref: SRPF77 (4R36-06Z0)
Caliber: 4R36

45mm stainless steel case, sapphire crystal, screw-down crown, 24 jewels, 41 hours power reserve, 21,600 bph, manual winding, hacking function.

King Samurai STO Manta Ray 2

Ref: SBDY081 (4R35-04D0)
Caliber: 4R35

44mm stainless steel case, sapphire crystal, screw-down crown, 23 jewels, 41 hours of power reserve, 21.600 bph, manual winding, hacking.

Antarctica Penguin

The latest models in the Save The Ocean series, introduced in 2021, are inspired by Antarctica. The footprints of a penguin are depicted on the “frozen” dial.

Monster STO Antarctica

Ref: SRPG57 (4R36-11C0)
Caliber: 4R36

42mm stainless steel case, Hardlex crystal, screw-down crown, 24 jewels, 40 hours of power reserve, 21,600 bph, manual winding, hacking.

Baby Tuna STO Antarctica

Ref: SRPG59 (4R35-04Z0)
Caliber: 4R35

43mm stainless steel case, Hardlex crystal, screw-down crown, 24 jewels, 40 hours of power reserve, 21,600 bph, manual winding, hacking.

Summary of the models

Humpback Whale

NicknameRef.Other Ref.MC Ref.CaliberLimited
Turtle STOSRPC91SRPC91K1, SRPC91K, SBDY0214R36-05H04R36No
Samurai STOSRPC93SRPC93K1, SRPC93K, SBDY0194R35-01X04R35No
Solar Chrono STOSSC675SSC675P1, SBDL055V175-0AD0V175No
Solar Tuna STOSNE518SNE518P1, SBDJ045V157-0CX0V157No
Turtle STO BlackSBDY027SRPD11K1, SRPD11K4R36-05H04R36No
Samurai STO BlackSBDY025SRPD09K1, SRPD09K4R35-01X04R35No
Solar Chrono STO BlackSBDL057SSC701PV175-0AD0V175No

Great White Shark

NicknameRef.Other Ref.MC Ref.CaliberLimited
Turtle STO Great White SharkSRPD21SRPD21K1, SRPD21K4R36-07D04R36No
Samurai STO Great White SharkSRPD23SRPD23K1, SRPD23K4R35-03G04R35No
Solar Chrono STO Great White SharkSSC741SSC741P1V175-0EV0V175No
King Turtle STO Great White SharkSRPE07SRPE07K1, SRPE07K4R36-06Z04R36No
Monster STO Great White SharkSRPE09SRPE09K1, SRPE09K4R36-08C04R36No

Manta Ray

NicknameRef.Other Ref.MC Ref.CaliberLimited
Turtle STO Manta RaySRPE39SRPE39K1, SRPE39K4R36-06Z04R36No
Samurai STO Manta RaySRPE33SRPE33K1, SRPE33K4R35-03W04R35No
Turtle STO Manta Ray 2SRPF77SRPF77K1, SRPF77K4R36-06Z0
4R36-08D0
4R36No
Sanurai STO Manta Ray 2SRPF79SRPF79K1, SRPF79K4R35-04D04R35No

Antarctica Penguin

NicknameRef.Other Ref.MC Ref.CaliberLimited
Monster STO AntarcticaSRPG57SRPG57K1, SRPG57K4R36-11C04R36No
Baby Tuna STO AntarcticaSRPG59SRPG59K1, SRPG59K4R35-04Z04R35No

Summary of the movements

Caliber 4R36

Technical sheet

TypeAutomatic
Power reserve40 hours
Bph21.600
Jewels24
Lift Angle53°
Manual windingYes
HackingYes

Caliber 4R35

Technical sheet

TypeAutomatic
Power reserve41 hours
Bph21.600
Jewels23
Lift Angle53°
Manual windingYes
HackingYes