A comprehensive collection of Seiko Tuna references — the shrouded professional diver, from the 1975 original to today's automatic, quartz and solar Tunas. Errors and missing references may exist. Please use the contact form to notify.
131 models|Last updated
AutomaticQuartzSolarSpring Drive
Kinetic models are grouped under Quartz and named on their labels.
Image Notice: Manufacturer stock photos and various web sources. Non-commercial reference use. Image removal requests via contact form.
Reference Note: JDM (Japan Domestic Market) references are listed where found, allowing you to identify both global and regional model variants.
AutomaticProfessional Mechanical Tunas
The Original Tuna (1975)
Seiko's first "Tuna" grew out of a letter from a saturation diver who reported that existing watches failed below 300m. After about seven years of development and more than 20 patents, Seiko launched the 6159-7010 Professional Diver's 600m in 1975: the world's first diver's watch with a titanium case and the first Seiko rated to 600m.
A one-piece (monocoque) titanium inner case was sealed with a new L-shaped gasket that keeps helium out rather than venting it, and a black ceramic-coated titanium shroud of about 50mm protected case and bezel. That shroud gave the family its collector nickname, the "tuna can". Inside sat the 6159B, a 36,000 vph Hi-Beat automatic. Production ended around 1978, when quartz took over the line.
Grandfather Tuna
6159-7010
Black Dial / Titanium - Cal. 6159B
Year: 1975
Automatic
World's first titanium-cased diver and Seiko's first 600m Professional. Hi-Beat 36,000 vph, L-shaped gasket, ceramic-coated titanium shroud. Produced c. 1975-1978.
Seiko has used the mechanical Tuna for its biggest anniversaries. The 2000 SBDX005 marked the Tuna's 25th year as a 1,000-piece, 600m homage to the 6159-7010, and was the first Tuna with the 8L35. The 2015 SBDX016 "Gold Ocean" (700 pieces) celebrated 50 years of Seiko divers with the first cermet shroud.
2019 brought two 1,000-piece Mobile Suit Gundam 40th-anniversary Zaku editions. The 2020 SLA041/SBDX035 (1,100 pieces) re-created the 1975 original for the diver's 55th anniversary, now rated to 1000m with a ceramic shroud and Ever-Brilliant Steel bezel.
Historical Collection 600m Tuna
SBDX005
Black Dial / Titanium - Cal. 8L35
Year: 2000
AutomaticLimited Edition - 1,000 pieces (Japan)
25th-anniversary homage to the 6159-7010 and the first 8L35 Tuna. Uncoated titanium, Hardlex crystal, 600m.
Gold Ocean
SBDX016
Mocha Dial / Pink-Gold Cermet Shroud - Cal. 8L35
Year: 2015
AutomaticLimited Edition - 700 pieces (worldwide)
Seiko Diver's 50th anniversary. First cermet shroud on a Seiko diver. Mechanical sibling of the quartz SBBN029 Platinum Ocean.
Gundam Zaku II Tuna
SLA029J1 / SBDX027
Military Green Dial & Shroud - Cal. 8L35
Year: 2019
AutomaticLimited Edition - 1,000 pieces
Mobile Suit Gundam 40th anniversary, "Mass Production Zaku II". Red counterweight on the seconds hand.
Char's Zaku II Tuna
SLA031J1 / SBDX029
Crimson Dial / Black Shroud - Cal. 8L35
Year: 2019
AutomaticLimited Edition - 1,000 pieces
Mobile Suit Gundam 40th anniversary. Red companion to the green Zaku II in Char Aznable's colours, on a red strap.
Seiko Diver's 55th-anniversary trilogy with SLA037 and SLA039. Re-creates the 6159-7010 in a 1000m titanium/ceramic case, with 40,000 A/m magnetic resistance printed in red on the dial.
Emperor Tuna - Marinemaster Professional 1000m (2009-2020)
After three decades of quartz Tunas, Seiko brought a mechanical movement back to its 1000m saturation diver in 2009 with the Japan-only SBDX011. These Marinemaster Professional models combine a black hard-coated titanium monocoque case with a zirconia ceramic shroud (52.4mm, about 17.2mm thick) and the 8L35, a 28,800 vph, 50-hour automatic derived from Grand Seiko's 9S55 and assembled at the Shizukuishi Watch Studio.
The 2015 SBDX013/SBDX014 refresh brought a new dial and an arrow hour hand, and the rose-gold-accented SBDX014 became the first mechanical Tuna sold outside Japan. The 2020 SLA042/SBDX038 added an Ever-Brilliant Steel bezel and closed the regular-production run.
Emperor Tuna
SBDX011
Black Dial / Ceramic Shroud - Cal. 8L35
Year: 2009
Automatic
First mechanical 1000m Tuna. JDM only. Black hard-coated titanium monocoque, sapphire crystal.
Emperor Tuna (2015)
SBDX013
All-Black / Arrow Hour Hand - Cal. 8L35
Year: 2015
Automatic
JDM successor to SBDX011 with a redesigned dial, bar indices at 3/6/9 and an arrow hour hand; date moved to about 4:30.
Rose Gold Emperor Tuna
SBDX014
Black Dial / Rose-Gold Accents - Cal. 8L35
Year: 2015
Automatic
First mechanical Tuna sold outside Japan. Rose-gold-tone bezel, crown, shroud screws and hands nod to the 1978 Golden Tuna.
Rose Gold Emperor Tuna (2020)
SLA042J1 / SBDX038
Black Dial / Rose-Gold Bezel - Cal. 8L35
Year: 2020
Automatic
Update of SBDX014 with an Ever-Brilliant Steel bezel, Prospex "X" dial, classic Tuna hands and round indices, and date at 3. Last regular-production mechanical Tuna.
Spring DriveSpring Drive Tunas
Spring Drive Tunas (2013-2015)
In 2013 Seiko put its Spring Drive glide-motion movement into the Tuna case for the first time with the 300-piece SBDB008 "Golden Spring Drive Tuna". The 5R65 caliber offers 72 hours of reserve, a power-reserve indicator and +/-15 seconds per month accuracy, housed in a 50 x 16.2mm titanium case with a DLC-coated titanium shroud rated to 600m.
Unlike the monocoque 8L35 and quartz Tunas, these use a screw-down caseback. A non-limited all-black SBDB009 followed, with the "X"-crown SBDB013 as its 2015 North American counterpart.
Golden Spring Drive Tuna
SBDB008
Black Dial / Gold-Tone Bezel - Cal. 5R65
Year: 2013
Spring DriveLimited Edition - 300 pieces (mainly Japan)
First Spring Drive Tuna. Gold-and-black livery recalls the 1978 Golden Tuna. 600m.
Spring Drive Tuna
SBDB009
All-Black DLC Titanium - Cal. 5R65
Year: 2014
Spring Drive
Non-limited all-black version of SBDB008. 72h power reserve with indicator. 600m.
Spring Drive Tuna (North America)
SBDB013
All-Black DLC Titanium - Cal. 5R65
Year: 2015
Spring Drive
North American edition of SBDB009 with the Prospex "X" crown.
QuartzProfessional Quartz Tunas
Vintage Quartz Tunas (1978-2006)
Three years after the 6159, Seiko launched the 7549 "Golden Tuna" in 1978, the world's first quartz professional saturation diver: a 600m titanium monocoque coated in gold titanium nitride. A cheaper 47mm steel 7549-7010 "Tuna Can" was rated to 300m and used a conventional screw-in caseback.
In 1986 the new high-torque 7C46 caliber arrived in the 7C46-7009 (SSBS018), the first diver's watch with a solid zirconia ceramic shroud and the first 1000m Tuna. A steel 300m quartz Tuna (SBBN007) returned in 1991, and the 7C46-7008 kept the Golden Tuna going until about 2006.
Golden Tuna
7549-7000
Black Dial / Day-Date / Gold TiN Titanium - Cal. 7549
Year: 1978
Quartz
World's first quartz professional saturation diver. 600m titanium monocoque. Worn by Roger Moore in For Your Eyes Only (1981). Dial reads "QUARTZ PROFESSIONAL 600m".
Golden Tuna (Diver's 600m Dial)
7549-7009
Black Dial / Day-Date / Gold TiN Titanium - Cal. 7549
Year: 1978
Quartz
Sister case of the 7549-7000. Dial reads "PROFESSIONAL DIVER'S 600m" with the Suwa symbol.
Tuna Can 300m
7549-7010
Black Dial / Day-Date / Steel - Cal. 7549
Year: 1978
Quartz
Steel 300m sibling of the Golden Tuna with a screw-in caseback. Ancestor of every later steel quartz Tuna.
1000m Golden Tuna
7C46-7009 / SSBS018
Black Dial / Gold-Tone Hands / Day-Date - Cal. 7C46
Year: 1986
Quartz
First diver's watch with a ceramic shroud, first 1000m Tuna and debut of the 7C46.
1000m Golden Tuna (Second Version)
7C46-7008
Black Dial / Gold-Tone Hands / Day-Date - Cal. 7C46
Year: 2000
Quartz
Last Golden Tuna, still sold as SSBS018. Revised hands, no Suwa symbol. Produced until about 2006.
Professional 300m Quartz
SBBN007
Black Dial / Day-Date / Steel - Cal. 7C46
Year: 1991
Quartz
Brought the steel 300m quartz Tuna back after a gap from 1986 to 1990.
Widely cited as the first limited-edition Tuna. Dial reads "SCUBAPRO 1999 300m", orange seconds hand, ScubaPro-signed crown. Case 7C46-7011.
1000m Professional Quartz Tunas (2005-2021)
From 2005 the 1000m quartz Tuna went black. The SBBN011 "Darth Tuna" put the 7C46 in a 49.4mm black-coated titanium monocoque under a ceramic shroud, with a flat sapphire crystal. Successive generations followed: the SBBN013 Marinemaster in 2009, the SBBN025 in 2015 and the SBBN047/S23631 Prospex in 2020.
Japan-only limited editions came in white, blue and cermet. Anniversary re-creations honoured the 1978 Golden Tuna (SBBN040/S23626, 1,978 pieces, 2018) and the 1986 1000m quartz diver (SBBN051/S23635, 1,200 pieces, 2021). Since 2020 the line has also been sold outside Japan under S236xx references.
Darth Tuna
SBBN011
Black Dial / Day-Date / Black Titanium - Cal. 7C46
Year: 2005
Quartz
First all-black quartz Tuna. No "Marinemaster" text on the dial. JDM.
Darth Tuna Marinemaster
SBBN013
Black Dial / Day-Date / Black Titanium - Cal. 7C46
Year: 2009
Quartz
Adds "Marinemaster" to the dial and a signed crown. JDM.
Robert F. Marx Tuna
SBBN00E
Black Dial / Blue "Robert F. MARX" Text / Day-Date - Cal. 7C46
Year: 2009
QuartzLimited Edition - 300 pieces (Japan)
Dedicated to the marine archaeologist Robert F. Marx.
Taiwan Golden Tuna
S23611
Black Dial / Gold-Tone Hands / Day-Date - Cal. 7C46
Year: 2006
Quartz
Little-documented Golden Tuna re-edition for the Taiwan market. Dial reads "PROFESSIONAL DIVER'S 1000m".
Taiwan Darth Tuna
S23619
Black Dial / Day-Date / Black Titanium - Cal. 7C46
Year: 2011
Quartz
Darth Tuna for the Taiwan market, without "Marinemaster" on the dial.
White Dolphin
SBBN019
Black Dial / White Ceramic Shroud / Day-Date - Cal. 7C46
Year: 2010
QuartzLimited Edition - 300 pieces (Japan)
Marks 45 years since Seiko's first diver (1965).
Blue Ocean Tuna
SBBN021
Black Dial / Blue Accents / Blue Ceramic Shroud - Cal. 7C46
Year: 2011
QuartzLimited Edition - 400 pieces (300 for Japan)
Marks Seiko's 130th anniversary (1881-2011).
Darth Tuna (2015)
SBBN025
Black Dial / Arrow Hands / Day-Date - Cal. 7C46
Year: 2015
Quartz
Third Darth Tuna, switching to Monster-style arrow hands. JDM.
Marks 35 years since the 7C46-7009. Gold shroud screws, gold "1000m" text and an orange seconds hand. Ships with black and blue straps.
300m Quartz Tunas (2008-2021)
The everyday quartz Tuna is a 47.7mm stainless-steel watch with a shroud and a screw-in caseback, rated to 300m rather than 1000m. It uses the same 7C46 quartz caliber, with about five years of battery life.
The SBBN015 (black insert) and SBBN017 (steel insert) generation was replaced in 2015 by the SBBN031/033/035 with Monster-style hands and a crown at 4. The 2020 SBBN045/S23629 restored the classic Tuna hands and moved the dial from "Marinemaster" to Prospex branding. Japan-only specials include the Golgo 13 (500 pieces, 2012) and the PADI SBBN039 (700 pieces, 2017).
Marinemaster 300m Quartz
SBBN015
Black Dial / Black Insert / Day-Date - Cal. 7C46
Year: c. 2008
Quartz
Long-running benchmark quartz Tuna on bracelet. Replaced by SBBN031 in 2015. JDM.
Marinemaster 300m Quartz (Steel Bezel)
SBBN017
Black Dial / Day-Date / Steel Insert - Cal. 7C46
Year: c. 2008
Quartz
SBBN015 with a steel bezel insert and bead-blasted shroud, on rubber. JDM.
Golgo 13 Tuna
SBBN023
Black Dial / Red Accents / Black Case - Cal. 7C46
Year: 2012
QuartzLimited Edition - 500 pieces (Japan)
Part of a land, sea and air trio tied to the Golgo 13 manga. Black-coated steel with red hands, markers and day/date frame.
Marinemaster 300m Quartz (2015)
SBBN031
Black Dial / Arrow Hands / Day-Date - Cal. 7C46
Year: 2015
Quartz
Second-generation steel Tuna with Monster-style hands and crown at 4. Diashield coating. JDM, on bracelet.
Steel-insert, steel-bracelet sibling of SBBN045, added in 2021. Successor to the SBBN017/SBBN033 steel-bezel line.
Kinetic GMT Tunas (2014-2016)
Seiko's only Kinetic Tunas launched at Baselworld 2014, when Prospex first went global. A 47.5mm steel case carries a shroud that is skeletonised for the first time, screwed over the inner case and exposing it.
Inside is the self-charging 5M85 Kinetic GMT caliber with roughly six months of reserve and a push-button reserve indicator. The family was the bracelet SUN019, the strap SUN021 and SUN023, and the 2016 PADI Special Edition SUN065, all rated to 200m.
Kinetic GMT Tuna
SUN019
Black Dial / GMT Hand / Skeleton Shroud - Cal. 5M85
Year: 2014
QuartzKinetic
First Tuna with a skeletonised shroud. On bracelet. Collector nickname "VATT".
Kinetic GMT Tuna Yellow
SUN021 / SBCZ023
Black Dial / Yellow & Blue Accents - Cal. 5M85
Year: 2014
QuartzKinetic
Steel case with a black bezel insert marked in yellow, yellow minute hand, blue GMT hand and 24-hour scale, on rubber.
Kinetic GMT Tuna Black
SUN023
Black Case / Orange & Blue Accents - Cal. 5M85
Year: 2014
QuartzKinetic
Black-coated case with a black bezel insert marked in orange, orange minute hand, blue GMT hand and 24-hour scale, steel crowns, on rubber.
PADI Kinetic GMT Tuna
SUN065
Blue Sunburst Dial / Blue Bezel / Red GMT Hand - Cal. 5M85
Year: 2016
QuartzKineticPADI Special Edition
Launched with the SRPA21 Turtle at the start of the Seiko x PADI partnership. PADI logo on the dial, red accents at the hour markers, blue-ringed crown.
AutomaticBaby & Compact Tunas
Baby Tuna First Generation "Superior" (2011-2013)
Seiko's first shrouded 4R divers appeared in Asia in late 2011. Three numbered limited editions led the launch, SRP233, SRP234 and SRP236 at 1,300 pieces each, and the regular SRP227, SRP229 and SRP231 followed in early 2012.
They used the then-new hand-winding, hacking 4R36 in a 44mm case under a removable polyurethane shroud (about 47-48mm overall). Collectors nicknamed them "Baby Tuna" or "Sardine". Later variants included the Korea-market orange SRP251, a Thailand-limited SRP407 and the blue SRP453, which marked the 2013 centenary of Seiko watchmaking.
First-generation Baby Tuna. Steel case and bezel insert under a black plastic shroud, on a steel bracelet. Day-date. 200m.
Superior Baby Tuna Black Red
SRP229
Black Dial / Black Bezel / Red Accents - Cal. 4R36
Year: 2012
Automatic
Same first-generation case as SRP227 but with a black bezel insert, red seconds hand, red minute numerals and a red-ringed crown, on a steel bracelet. Day-date. 200m.
Superior Baby Tuna Black Gold
SRP231
Black PVD / Gilt Dial - Cal. 4R36
Year: 2012
Automatic
Black PVD case and shroud with gilt hands, minute numerals and index surrounds, on rubber. Day-date. 200m.
Superior Baby Tuna Red Shroud
SRP233
Black Dial / Red Shroud - Cal. 4R36
Year: 2012
AutomaticLimited Edition - 1,300 pieces (Asia)
One of the first three 4R36 Seiko divers. Red shroud over a black PVD case, "LIMITED EDITION" on the dial, red seconds hand and minute numerals, numbered caseback.
Superior Baby Tuna Gold
SRP234
Black Dial / Gold-Tone Case - Cal. 4R36
Year: 2012
AutomaticLimited Edition - 1,300 pieces (Asia)
Gold-tone case under a black shroud, gold-outlined hands and markers, gold crown, "LIMITED EDITION" on the dial, on rubber.
Superior Baby Tuna Brown
SRP236
Brown Pearl Dial / Brown Shroud - Cal. 4R36
Year: 2012
AutomaticLimited Edition - 1,300 pieces (Asia)
Black PVD case, rose-gold bezel and hands, "LIMITED EDITION" on the dial, brown rubber strap.
Superior Baby Tuna Orange
SRP251
Orange Dial / Steel Bezel - Cal. 4R36
Year: c. 2013
Automatic
Orange dial with a steel bezel insert under the black shroud, on a steel bracelet. Sold mainly in South Korea. Collector nickname "the Unicorn".
Image Needed
Superior Baby Tuna Thailand
SRP407
Polyurethane Shroud - Cal. 4R36
Year: c. 2012
AutomaticLimited Edition (Thailand)
Thailand-limited first-generation Baby Tuna.
Superior Blue Baby Tuna
SRP453
Blue Gradient Dial / Blue Shroud / Gold Hands - Cal. 4R36
Marks the centenary of Seiko watchmaking (1913-2013). "LIMITED EDITION" on the dial, gold-tone hands and crown, blue strap. Not individually numbered.
Prospex Baby Tuna - Steel Shroud (2014-2020)
In December 2014 Seiko replaced the plastic guard with a screwed stainless-steel shroud and moved the Baby Tuna into the Prospex line. The 48mm x 13.8mm case was ISO 6425-compliant and became the long-running core model: SRP637 on bracelet, SRP639 black and yellow on rubber, and SRP641 in black and gold.
In 2020 SRP637 and SRP639 were re-referenced as SRPE85 and SRPE87 with revised caseback text, and Japan got its first official Baby Tunas as the online-exclusive SBDY053 "Ice Frost" and SBDY055. The Thailand-only SRP727 also used this case.
Baby Tuna Black
SRP637
Black Dial / Steel Bezel & Shroud - Cal. 4R36
Year: 2014
Automatic
First Baby Tuna with a metal shroud, held by screws. Steel bezel insert, Prospex "X" dial, day-date, on bracelet. 200m.
Black bezel insert with a yellow first-15-minute track, yellow minute and seconds hands, day-date, on rubber. 200m.
Baby Tuna Black Gold
SRP641
Black PVD / Gold Accents - Cal. 4R36
Year: 2014
Automatic
Black PVD case and shroud with gold screws and crown, gilt hands and minute numerals, day-date, on rubber. 200m.
Thailand Flag Baby Tuna
SRP727
Thai Flag Striped Dial / Red Bezel Accents - Cal. 4R36
Year: c. 2015
AutomaticLimited Edition - 500 pieces (Thailand)
Red, white and blue Thai flag stripes on the dial, black PVD case with a red first-15-minute bezel track and gold crown and shroud screws. Shares shroud, crown and chapter ring with SRP641.
Baby Tuna Black (2020)
SRPE85
Black Dial / Steel Bezel & Shroud - Cal. 4R36
Year: 2020
Automatic
SRP637 re-referenced with revised caseback text; dial, bezel and bracelet look identical.
JDM online-distribution exclusive, made in Japan. Frosted ice-blue dial with a steel bezel insert, on a steel bracelet. Not numbered.
Baby Tuna Blue Gradient
SBDY055
Blue Gradient Dial / Yellow Seconds - Cal. 4R36
Year: 2020
Automatic
JDM online-distribution exclusive, made in Japan. Steel bezel insert, on a steel bracelet.
Ceramic "Scallop" Baby Tuna (2015-2017)
At Baselworld 2015 Seiko added a larger 50-51.7mm Baby Tuna with a scalloped profile, no protruding lugs and a ceramic-and-steel shroud: the blue SRP653 "Special Edition" and the black SRP655.
The case continued in the black ceramic SRPA79, SRPA81 and SRPA82 and in the 2017 PADI Special Edition SRPA83. It also served as the base for the first regional limited editions, listed in the next section.
Baby Tuna Blue Special Edition
SRP653
Blue Dial / Blue Ceramic Shroud / Yellow Seconds - Cal. 4R36
Year: 2015
AutomaticSpecial Edition
Released in the 50th anniversary year of Seiko divers. Round and triangle indices, yellow seconds hand, day-date at 3. "Special Edition" caseback, not numbered.
Baby Tuna Black Ceramic
SRP655
Black Dial / Red-Ringed Indexes / Red Seconds - Cal. 4R36
Year: 2015
Automatic
Black dial and strap, black shroud, red seconds hand, 50.2mm scallop case. Listed on Seiko Taiwan as SRP655J1. 200m.
Baby Tuna Black Ceramic (Bracelet)
SRPA79
Black Dial / Steel Bezel / Black Shroud - Cal. 4R36
Year: c. 2016
Automatic
51.7mm ceramic and steel case: black shroud around a steel bezel insert, made in Japan, day-date, on a steel bracelet.
Baby Tuna Black Ceramic (Rubber)
SRPA81
All-Black Case, Bezel & Shroud - Cal. 4R36
Year: c. 2016
Automatic
All-black version: black hard-coated case, black bezel insert and shroud, on a black urethane strap.
Baby Tuna Black Gold Ceramic
SRPA82
Black Dial / Gold-Tone Case & Crown - Cal. 4R36
Year: c. 2016
Automatic
Black shroud over a gold-tone case and crown that show through the scallops, gilt hands and index surrounds, on rubber.
PADI Baby Tuna
SRPA83
Blue PADI Dial / Blue & Red Bezel - Cal. 4R36
Year: 2017
AutomaticPADI Special Edition
Navy ceramic scallop shroud, blue bezel with a red first-15-minute track, red minute and seconds hands, blue silicone strap. "Special Edition" caseback, not numbered.
Regional Limited Editions - Zimbe & Thong Sia (2016-2022)
Seiko Thailand's whale-shark "Zimbe" series included four Tunas: the white No.3 SRPA47, the blue and rose-gold No.8 SRPC96, the gold No.13 SRPE14 and, in the compact case, the red and white No.16 SRPJ55.
Thong Sia, Seiko's distributor for Singapore, Malaysia, Hong Kong, Macau and Brunei, ran a parallel series: the green SRPA99, the "Yellowfin Tuna" SRPD14 and the "Blue Butterfly Fish" SRPD15.
Zimbe No.3 White Tuna
SRPA47J1
White Dial / Grey Bezel / Black Ceramic Shroud - Cal. 4R36
Third watch of Seiko Thailand's whale-shark "Zimbe" series. White dial with "LIMITED EDITION" print, grey steel bezel insert inside a black ceramic scallop shroud, on rubber. Numbered caseback.
Green-to-black gradient dial with gold-framed indices and yellow seconds hand, navy ceramic scallop shroud, black-to-navy bezel, navy strap. Numbered caseback.
48mm steel-shroud case with a gold-tone shroud and bezel, champagne-silver dial with a hexagon pattern, red seconds hand, day-date, on a steel bracelet.
Uses the compact 43.2mm Street Series case. White dial, orange-red and cream bezel, orange seconds hand, date at 4:30, white strap.
Compact 43.2mm Automatic Tunas (2020-2022)
In June 2020 the Street Series "Urban Safari" SRPE29 and SRPE31 (JDM SBDY059 and SBDY061) brought the automatic Tuna down to 43.2mm with a 44mm lug-to-lug, still with the 4R36 and day/date.
From 2021 the compact case switched to the date-only 4R35. That year brought the blue SRPF81 and green SRPF83, the JDM-only SBDY089 and SBDY091, the 1,000-piece NEIGHBORHOOD SBDY077 and the Save the Ocean "Antarctica" SRPG59. The 2022 penguin SRPH77 and Zimbe No.16 SRPJ55 are the last small automatic Tunas Seiko has released.
Urban Safari Tuna Tan
SRPE29K1 / SBDY059
Tan Dial / Gunmetal Shroud - Cal. 4R36
Year: 2020
Automatic
First compact 43.2mm automatic Tuna and first mechanical Street Series model. Tan dial with black-framed indices, tan and black bezel, gunmetal case, tan strap. Day/date.
Urban Safari Tuna Grey
SRPE31K1 / SBDY061
Grey Dial / Gunmetal Shroud - Cal. 4R36
Year: 2020
Automatic
Grey-dial companion to SRPE29: grey and black bezel, gunmetal case, grey strap. Day/date.
NEIGHBORHOOD Tuna
SBDY077
Black Dial / Cream Lume / Grey Bezel - Cal. 4R35
Year: 2021
AutomaticLimited Edition - 1,000 pieces (Japan)
NEIGHBORHOOD collaboration, made in Japan. Black dial with vintage-cream lume, red NEIGHBORHOOD text, grey bezel with a red pip, matte-black shroud, black strap. Date at 4:30.
Street Series Tuna Blue
SRPF81K1 / SBDY073
Navy Sunburst Dial / Navy & Champagne Bezel - Cal. 4R35
Year: 2021
Automatic
Navy sunburst dial with vintage-cream lume, navy bezel with a champagne first-20-minute section, steel shroud, navy strap. Date only. Not sold in the US.
Street Series Tuna Green
SRPF83K1 / SBDY075
Green Dial / Green & Gold Bezel - Cal. 4R35
Year: 2021
Automatic
Olive-green sunburst dial with vintage-cream lume, green bezel with a champagne first-20-minute section, steel shroud, olive strap. Date only.
Street Series Tuna Tan (JDM)
SBDY089
Dark Grey Dial / Tan & Black Bezel - Cal. 4R35
Year: 2021
Automatic
JDM only, made in Japan; no export twin found. Dark grey dial with vintage-cream lume, tan bezel with a black first-20-minute section, steel shroud, tan strap. Date only.
Street Series Tuna Black (JDM)
SBDY091
Black Case / Black & Tan Bezel - Cal. 4R35
Year: 2021
Automatic
JDM only, made in Japan; inverse of SBDY089. Black case and shroud, black dial, black bezel with a tan first-20-minute section, black strap. Date only.
Save the Ocean Antarctica Tuna
SRPG59K1 / SBDY107
White-to-Blue Frosted Dial - Cal. 4R35
Year: 2021
AutomaticSave the Ocean Special Edition
Ice-blue frosted dial with penguin footprints, steel bezel insert, white strap, date at 4:30. Companion to the SRPG57 Antarctica Monster.
Save the Ocean Penguin Tuna
SRPH77K1 / SBDY117
Teal Ice-Texture Dial / Steel Bezel - Cal. 4R35
Year: 2022
AutomaticSave the Ocean Special Edition
Deep teal dial with an ice-crack texture, yellow-tipped seconds hand, steel bezel insert, teal strap, date at 4:30. Companion to the SRPH75 Monster.
SolarSolar Tunas
Japan-Market Solar Tunas & Collaborations (2016-2019)
Before the global launch, Seiko Japan introduced solar Tunas in 2016. These 45.9mm SBDN models ran on the V147 caliber, sold below the quartz SBBN and were issued in limited runs. Many were collaborations with Japanese select shops and labels such as LOWERCASE, United Arrows, BEAMS and ESTNATION; in the US the partner was Freemans Sporting Club.
A smaller 42.7mm STBR case followed in 2017-2018, used mostly for LOWERCASE-designed retailer specials, and the later SBDJ collaborations moved to the V157 caliber. These small-batch Japanese editions are thinly documented; details are being confirmed.
LOWERCASE Solar Tuna
SBDN021
Black Dial / Black Shroud / Steel Bracelet - Cal. V147
Year: 2016
SolarLimited Edition (Japan)
First wave of the Japan-only solar Tunas.
Solar Tuna Golden (JDM)
SBDN028
Black Dial / Gold Accents - Cal. V147
Year: 2016
SolarLimited Edition (Japan)
Widely described as the forerunner of the SNE498 Golden Tuna tribute.
Freemans Sporting Club Solar Tuna
SBDN029
PVD Case / Vintage-Tone Lume - Cal. V147
Year: 2016
SolarLimited Edition (Freemans Sporting Club, US)
Sold out on release.
LOWERCASE Diver Scuba Solar Tuna
SBDN043
Black Dial / Vintage-Tone Lume / Red Depth Text - Cal. V147
Year: c. 2017
SolarLimited Edition (Japan)
LOWERCASE-designed Japan-only solar Tuna.
LOWERCASE Diver Scuba Solar Tuna II
SBDN045
Black Dial / Black & Blue Bezel / Blue Seconds Hand - Cal. V147
Year: c. 2017
SolarLimited Edition (Japan)
LOWERCASE collaboration.
United Arrows Solar Tuna
STBR011
Black 62MAS-Style Dial / 15-30-45 Bezel - Cal. V147
Year: 2018
SolarUnited Arrows Exclusive (Japan)
Mid-size 42.7mm Tuna case, designed by LOWERCASE.
Fujiwara Hiroshi Solar Tuna
STBR013
Cal. V147
Year: c. 2018
SolarLimited Edition (Japan)
LOWERCASE x Hiroshi Fujiwara collaboration, 42.7mm case.
At Baselworld 2018 Seiko made the Tuna affordable with the V157 solar caliber, which runs about ten months on a full charge. The 46.7 x 12.4mm steel case has a lightweight plastic shroud and is rated to 200m.
The launch trio was the SNE497, the SNE498 tribute to the 1978 Golden Tuna and the SNE499 PADI edition. The line grew through the Save the Ocean SNE518, the "Street Series" from late 2018 and US exclusives, then the Black Series SNE577 (5,000 pieces, 2021) and China-only limited editions.
Solar Tuna
SNE497
Black Dial / Black Shroud / Steel Bracelet - Cal. V157
Year: 2018
Solar
Plain steel model of the 2018 solar Tuna launch trio: black dial and bezel, black plastic shroud, date at 4, on a steel bracelet.
Solar Golden Tuna
SNE498
Black Dial / Gold-Tone Accents - Cal. V157
Year: 2018
Solar
Modern tribute to the 1978 Golden Tuna, promoted with Fabien Cousteau. Black hard-coated case and shroud with gold-tone bezel edge, crown and shroud screws, gold seconds hand, black strap.
PADI Solar Tuna
SNE499
Black Wave Dial / Pepsi Bezel / Blue Shroud - Cal. V157
Year: 2018
SolarPADI Special Edition
First solar PADI Tuna. Black wave-pattern dial with PADI logo, red and blue "Pepsi" bezel, red-tipped minute hand, blue shroud and strap.
Save the Ocean Solar Tuna
SNE518
Blue Wave Dial / Blue-to-Black Bezel - Cal. V157
Year: 2018
SolarSave the Ocean Special Edition
First Tuna in the Save the Ocean series; the blue wave-line dial is inspired by the blue whale. Blue-to-black gradient bezel, black shroud, black strap.
Street Series Solar Tuna Navy
SNE533
Navy Dial - Cal. V157
Year: 2018
Solar
Launch trio of the Street Series.
Street Series Solar Tuna Olive
SNE535
Olive Dial - Cal. V157
Year: 2018
Solar
Launch trio of the Street Series.
Street Series Solar Tuna Grey
SNE537
Grey Dial - Cal. V157
Year: 2018
Solar
Launch trio of the Street Series.
Street Series Camo Tuna
SNE541
Black Camo Dial - Cal. V157
Year: 2019
SolarU.S. Exclusive
Camo-texture dial and strap, steel case.
Street Series Camo Tuna Black
SNE543
Olive Camo / Black IP - Cal. V157
Year: 2019
SolarU.S. Exclusive
Black-IP case on olive strap.
Street Series Solar Tuna White Strap
SNE545
Black Sunburst Dial / White Shroud & Strap / Red Accents - Cal. V157
Year: 2020
Solar
2020 addition to the Street Series.
Street Series Solar Tuna Black Olive
SNE547
Black Sunburst Dial / Black & Olive Bezel - Cal. V157
Year: 2020
Solar
2020 addition to the Street Series.
Solar Tuna Black Gold
SNE556
Black Dial / Gold Accents - Cal. V157
Year: c. 2020
Solar
Probably a successor to the SNE498.
Street Series Solar Tuna
SNE559
Navy Dial - Cal. V157
Year: c. 2021
Solar
Has an official Seiko Singapore product page.
Street Series Solar Tuna Grey (2021)
SNE563
Grey Dial - Cal. V157
Year: c. 2021
Solar
Second-generation Street Series case (V157-0DH0).
Black Series "Ninja" Tuna
SNE577
Black Dial / Orange Minute Hand / Beige Lume - Cal. V157
Year: 2021
SolarLimited Edition - 5,000 pieces (worldwide)
Solar Tuna of the 2021 Black Series trio with the SRPH11 Samurai and SRPH13 Monster. Collectors call it the solar "Ninja" Tuna, after the same all-black, orange-hand scheme as the Ninja Turtle and Ninja Samurai. Not to be confused with the 300m Ninja Tuna (SBBN035).
China Red Gold Tuna
SNE580
Red Textured Dial / Red & Black Bezel / Gold Accents - Cal. V157
Year: 2021
SolarLimited Edition (China)
China-market limited edition.
China Red Black Tuna
SNE581
Black Dial / Red Shroud & Bezel - Cal. V157
Year: 2022
SolarLimited Edition - 500 pieces (China)
China-market limited edition.
Digi Tuna - Solar Digital (2018)
In 2018 Seiko Japan put a solar S802 digital module into a 49.5mm shrouded Tuna-style case rated to 200m. These Prospex Fieldmaster SBEP watches were designed with LOWERCASE.
The regular SBEP001, SBEP003 and SBEP005 were joined by limited runs for Journal Standard and Urban Research.
Digi Tuna Black
SBEP001
Black / Silver Pushers - Cal. S802
Year: 2018
Solar
Tuna-shaped solar digital, designed with LOWERCASE. JDM.
All Black / Black Pushers / Red Depth Text - Cal. S802
Year: 2018
SolarLimited Edition - 300 pieces (Japan)
Japanese retailer limited edition.
Mini Tuna - 38.7mm Solar (2022-2024)
The Street Series "Mini Tuna" shrinks the shrouded case to 38.7mm wide and 10.4mm thick while keeping 200m water resistance. It uses the time-only V131 solar caliber, which has no date and about six months of reserve.
The first pair was the SUT403 navy and SUT405 khaki "Safari Edition" (2022). Brighter colourways followed, including the SUT407, SUT409, SUT411 and the 2024 SUT421.
Mini Tuna Safari Navy
SUT403
Navy Dial / Navy & Beige Bezel / Steel Shroud - Cal. V131
Year: 2022
Solar
First scaled-down Tuna. Time only, no date.
Mini Tuna Safari Khaki
SUT405
Khaki Green Dial / Green & Beige Bezel / Steel Shroud - Cal. V131
Year: 2022
Solar
Khaki companion to SUT403.
Mini Tuna White
SUT407
White Dial / Beige & Brown Bezel / White Strap - Cal. V131
Year: c. 2023
Solar
Mini Tuna Red Pink
SUT409
White Dial / Pink & Red Bezel / White Strap - Cal. V131
