The Iconic Seiko “Turtle”:
From Past until Present
November 13, 2018
The Seiko “Turtle” is one of the Japanese watch maker’s best selling and iconic watches. Its timeless cushion case design has captivated generations of watch lovers up until this day.
The popular “Turtle” lineup started when Seiko manufactured the 6306 in 1976 and eventually the 6309 which is an identical cousin of the 6306 with a few differences (hacking movement and Kanji day wheel). The 6309 was eventually produced up until 1988 and was well-loved for years.
Then come 2016 when Seiko announced that they will be producing a re-issue of the popular “turtle” diver into its modern counterpart and specifications.
It all exploded from there. Vintage and new collectors, enticed by the revival of the Seiko Cult Classic, tried to snatch up model after model of both old and new Seiko Turtles.
Limited or Numbered edition owners benefited the most out of the Seiko Turtle trend as their pieces either maintained a healthy resale value or even doubled in value due to the supply and demand.
Here is a complete list of all Seiko “Turtle” models from 1976 until today.
Note: The list is a work in progress and will be constantly updated whenever a new Turtle releases comes out or if I missed a previously released model

The Seiko Turtle 6309's timeless cushion case design
Source: Here
Production: 1976 - 1981
Seiko 6306 Series
Movement: Seiko 6306 Automatic
Highlights: 21 Jewels, Kanji Day Wheel, Hacks, 150m Water Resistance
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source: Here
Production: 1978 - 1979
Seiko 6306 Scubapro 450
Movement: Seiko 6306 Automatic
Highlights: Scubapro 450 branding on dial, 150m Water Resistance, Very Rare! Be Careful with Reproductions
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source: Here
Production: 1976 - 1988
Seiko 6309 Series
Movement: Seiko 6309 Automatic
Highlights: 17 Jewels, 150m Water Resistance
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2016 -
Seiko SRP777 (Black)
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2016 -
Seiko SRP775 (Black/Gold)
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2016 -
Seiko SRP779 (Pepsi Bezel)
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2016 -
Seiko SRP773 (Blue Bezel)
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2016 -
Seiko SRPA21 PADI
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2016 only
Seiko SRPA19K1 Zimbe
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case, Cyclops, Limited to 1299 pcs.
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2016 only
Seiko SRPB01K1 Green
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case, Limited to 3500 pcs.
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2017 only
Seiko SRPB11 "Blue Lagoon"
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case, Limited to 6000 pcs.
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2017 -
Seiko SRPC25 Gradient Blue
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2017 -
Seiko SRPC23 Grey Dial
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2018 -
Seiko SRPC44 All Gold
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Gold Stainless Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2018 -
Seiko SRPC48 Black/Gold
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Black-Coated Steel Case
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2018 only
Seiko SRPC49 Black Series
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Black-Coated Steel Case,
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2018 only
Seiko SRPC95 Orange "Nemo"
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case,
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source
Production: 2018 only
Seiko SRPC91 "Save the Ocean"
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case,
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm
Source: Here
Production: 2018 only
Seiko SRPD01 "Dawn Grey"
Movement: Seiko 4R36 Automatic
Highlights: Lumibrite lume, Hardlex lens, 200m Water Resistance, Stainless Steel Case, Limited to 2018 pcs.
Diameter: 45mm
Thickness: 13mm
Lug Size: 22mm