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Seiko Sumo


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Seiko Prospex Steel 45mm United States of America, New Jersey, Rahway
Seiko Prospex
SBDC027 #34;Sumo" 50th Anniversary (RARE amp; LIMITED)
$1,100
+ $29 for shipping
Seiko Prospex Steel 44mm Silver United States of America, New York, Massapequa Park
Seiko Prospex
Stainless Steel Diver Sumo Silver 44mm SPB029J1 Watch BOX PAPERS
$1,993
+ $99 for shipping
Seiko Prospex Steel 45mm Green No numerals United States of America, New Hampshire, USA
Seiko Prospex
SBDC081 SPB103 Diver 200m SUMO JAPAN MADE ( NEW )
$821
Free shipping
Seiko Steel 45mm Black United States of America, Florida, Pompano Beach
Seiko
Sumo 50th Anniversary Limited Edition SBDC027 Japanese Automatic 200m 45mm
$1,295
+ $49 for shipping
Seiko Prospex Black United States of America, California, San Mateo
Seiko Prospex
SBDC031 - Prospex Diver Scuba SBDC031
$569
Free shipping
Seiko Prospex Steel 45mm Blue No numerals United States of America, New Jersey, Upper Saddle River
Seiko Prospex
PADI Collaboration SBDC049 (1,000 Limited) Mint Complete Set
$1,395
+ $29 for shipping
Seiko Prospex Steel 45mm Green No numerals United States of America, Florida, Naples
Seiko Prospex
Sumo SPB195J1
$1,500
+ $50 for shipping
Seiko Prospex Steel 43mm Green No numerals
Promoted
Seiko Prospex
SuMo Limited Edition 50th Anniversary
$2,693
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Diver´s Sumo SPB101J1EST
$951
+ $64 for shipping
Seiko Prospex Steel 43,5mm Green No numerals
Seiko Prospex
Ref. SZSC004 Green SUMO 200m Diver
$956
+ $69 for shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Sumo - automatico - 45 mm - NOS - 2022
$636
+ $222 for shipping
Seiko Prospex Steel 45mm Black No numerals United States of America, Ohio, USA
Seiko Prospex
Sumo Black Series Limited Edition SPB125J1 JAPAN MADE ( NEW )
$1,499
Free shipping
Seiko Prospex Steel 45mm
Seiko Prospex
SPB323J1 - Sumo Prospex Automatic Grey Dial Stainless Steel Men's Watch
$1,099
+ $84 for shipping
Seiko Prospex Steel 45mmmm Black No numerals
Seiko Prospex
Sumo (Prospex series)
$439
Excl. shipping
Private Seller
Seiko Prospex Steel 44.50mm Black United States of America, California, Burlingame
Seiko Prospex
SSC795J1 - Prospex PADI Special Edition Sumo Chronograph Watch 44.5mm
$586
Free shipping
Seiko Prospex Steel 45mm Blue No numerals
Seiko Prospex
Extremely Rare Prospex Sumo Japan Collection Limited Edition sbdc113
$1,245
+ $72 for shipping
Seiko Prospex Steel 45mm Blue No numerals
Seiko Prospex
SBDC069
$404
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Black
Seiko Prospex
美品 SEIKO セイコー プロスペックス ダイバースキューバ デイト 6R15-02T0/SBDC027 自動巻き メンズ_714920 中古
$962
Free shipping
Seiko Prospex Steel 45mm
Seiko Prospex
Sumo Taiwan Limited Edition SPB343J1
$1,300
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Diver´s Sumo Ref. SPB101J1EST
$1,020
+ $69 for shipping
Seiko Prospex Steel 45mm
Seiko Prospex
Sumo Prospex Automatic Divers Limited Edition #39;Noosa' SPB347J
$1,300
Excl. shipping
Private Seller
Seiko Prospex Steel Black No numerals
Seiko Prospex
SBDC031
$420
Excl. shipping
Private Seller
Seiko Prospex Steel Black United States of America, Ohio, USA
Seiko Prospex
NEW SUMO PROSPEX SBDC083 SPB101 DIVER 200M JAPAN MADE (NEW)
$859
Free shipping
Seiko Prospex Steel 44mm Blue
Seiko Prospex
Blue Baby Sumo
$400
Excl. shipping
Private Seller
Seiko Prospex Steel Black
Seiko Prospex
SBDC027
$1,150
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Green No numerals
Seiko Prospex
Sumo (Isan Phee Ta Khone) Thailand Limited Edition spb247
$1,303
+ $72 for shipping
Seiko Prospex Steel 45mm United States of America, California, Burlingame
Seiko Prospex
SPB323J1 - Sumo Prospex Automatic Grey Dial Stainless Steel Men's Watch
$916
Free shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
SPB101J1 Black Sumo 200m Diver's Automatic
$796
+ $45 for shipping
Seiko Prospex Steel 45mm Blue
Seiko Prospex
SBDC033
$420
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Green No numerals
Seiko Prospex
Diver´s «Sumo Green»
$760
+ $64 for shipping

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Seiko Prospex Steel
Seiko Prospex
SBDC081 SBP103 Diver 200m 3rd SUMO
$554
+ $36 for shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
#34;Sumo" Black Series SPB125J1
$823
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Green
Seiko Prospex
Sumo Prospex Green Dial SBDC081
$571
+ $74 for shipping
Seiko Prospex Steel 45mm Blue No numerals
Seiko Prospex
Sumo Prospex Limited Special Edition Full Set MINT
$622
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Brown No numerals
Seiko Prospex
Extremely Rare Prospex Sumo Limited Edition
$1,100
+ $72 for shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Sumo Black Series Limited Edition SPB125J1
$849
Excl. shipping
Private Seller
Seiko Prospex 45mm
Seiko Prospex
SBDC033j1 Prospex Sumo
$945
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Black
Seiko Prospex
Automatic Air Diver Rare Limited Edition 2015 5531
$1,115
+ $52 for shipping
Seiko Prospex Steel 45mm Black
Seiko Prospex
SUMO AUTOMATIC DIVER
$1,284
Excl. shipping
Private Seller
Seiko Steel 45mm Green No numerals
Seiko
Sumo SZSC004 Green Hulk with unique serial
$1,063
Excl. shipping
Private Seller
Seiko Prospex Steel
Seiko Prospex
SBDC083 SPB101J Diver 200m 3rd SUMO
$554
+ $36 for shipping
Seiko 45mm
Seiko
SBDC033j1 Sumo
$930
Excl. shipping
Private Seller
Seiko Prospex Steel 45mm Blue No numerals
Seiko Prospex
SBDC057
$478
Excl. shipping
Private Seller
Seiko Prospex Steel Green No numerals
Seiko Prospex
Extremely Rare Limited Edition Sumo 50th Anniversary Spb031j
$2,605
+ $72 for shipping
Seiko Prospex Steel 45mm Blue No numerals
Seiko Prospex
SBDC 113
$978
Excl. shipping
Private Seller
Seiko Prospex Steel 44.5mm Blue No numerals
Seiko Prospex
Solar Diver's Sumo
$606
+ $64 for shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Diver Scuba Black Sumo 200m
$445
+ $74 for shipping
Seiko Prospex Steel 50mm Orange
Seiko Prospex
SBDC005 Diver Scuba ORANGE Sumo
$1,312
+ $92 for shipping
Seiko Prospex Steel 45mm No numerals
Seiko Prospex
Men's SPB323J1 Sumo Prospex Diver 20ATM Watch
$1,104
+ $20 for shipping
Seiko Prospex Steel Green No numerals
Seiko Prospex
SZSC004 Green SUMO 200m Diver
$815
+ $36 for shipping
Seiko Prospex Steel 44.50mm Black
Seiko Prospex
SSC795J1 - Prospex PADI Special Edition Sumo Chronograph Watch 44.5mm
$549
+ $89 for shipping
Seiko Prospex Steel 52.6mm Blue
Seiko Prospex
セイコー プロスペックス ダイバースキューバ SBDC033 自動巻き 手巻付き 時計 メンズ 腕時計
$510
+ $37 for shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Ninja Sumo full set spb125
$753
+ $72 for shipping
Seiko Prospex Steel Blue No numerals
Seiko Prospex
SPB321J1 Sea Sumo Automatic Blue Dial 200M Diver's Watch
$939
+ $43 for shipping
Seiko Prospex Steel 44.5mm Black No numerals
Seiko Prospex
Sumo Chrono Solar
$653
+ $64 for shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Diver Scuba Black Sumo 200m
$445
+ $74 for shipping
Seiko Steel 52.6mm Brown No numerals
Seiko
Prospex King Sumo Grey Gradation Diver's Watch Ceramic Bezel 6R35 SBDC177 SPB323J1
$942
+ $92 for shipping
Seiko Prospex Steel 45mm Black No numerals
Seiko Prospex
Men's SPB325J1 Sumo Prospex PADI Ed.
$966
+ $20 for shipping
Seiko Prospex Steel 45mm Green No numerals
Seiko Prospex
Diver Sumo Ref. SPB103J1 Green Dial Stainless Steel Strap
$723
+ $52 for shipping
Seiko Prospex Steel 45mm Blue No numerals
Seiko Prospex
Automatic Sumo Blue Seiko
$1,328
+ $95 for shipping

Seiko Sumo: XXL Diving Watch for Pros

The Sumo is one of the most coveted and affordable diving watches made by Japanese manufacturer Seiko. This watch boasts high-quality workmanship, water resistance to 200 m (20 bar, 656 ft), and a precise, automatic in-house movement.

By Chrono24

Robust, Affordable, and Water-Resistant to 200 m

Since its inception in 2007, Seiko's Sumo collection has included some of the most popular, high-quality, and affordable diving watches on the market. As the name implies, these watches are comparatively large, like the famous Japanese wrestlers. But while the timepieces measure some 45 mm across, they're also relatively thin, and thus don't have an excessively large overall look.

A characteristic feature of the Sumo is its unidirectional diving bezel, which is set into the case. This design element is partly responsible for the relatively slim profile of the watch. Along with the timepiece's diameter, the position of the crown at 4 o'clock is another typical feature of the three-hand Seiko Sumo.

Every three-hand Sumo variant is powered by the automatic in-house caliber 6R15 or 6R35. While the former has a power reserve of 50 hours, the latter boasts some 70 hours. In addition to the automatic Sumo models, a solar-powered chronograph is also available. All Sumo editions are made of stainless steel (some references have a black coating) and are water-resistant to 200 m (20 bar, 656 ft).

Within the Prospex collection – the name stems from "Professional Specifications" – the Seiko Sumo falls in the middle range of prices. It is a bit more expensive than the Turtle, but considerably less expensive than the Marinemaster.

Reasons to Buy a Seiko Sumo

  • Professional diving watch
  • In-house caliber 6R15 or 6R35
  • Water-resistant to 200 m (20 bar, 656 ft)
  • Robust stainless steel case

Prices at a Glance: Seiko Sumo

Reference number Price (approx.) Features, caliber
SBDC027 1,700 USD Black dial, black bezel, 6R15
SBDC049 1,000 USD PADI edition, limited edition, 6R15
SZSC004 1,000 USD Green dial, green bezel, 6R15
SPB125J1 760 USD Black case, limited edition, 6R35
SPB181J1 700 USD PADI edition, Pepsi bezel, 6R35
SPB103J1 690 USD Green dial, green bezel, 6R35
SSC795J1 720 USD Chronograph, black dial, Pepsi bezel, V192
SBDC001 530 USD Black dial, black bezel, 6R15
SBDC033 400 USD Blue dial, blue bezel, 6R15

How much does a Seiko Sumo cost?

A standard edition Seiko Sumo like the ref. SBDC033, fitted with the caliber 6R15 and a Hardlex crystal, costs about 400 USD. Mid-range Sumo models like the limited edition ref. SZSC004, which comes with the more modern caliber 6R35, a jade-green dial, and green bezel, change hands for approximately 860 USD.

Weighing in at around 1,000 USD is the limited edition Seiko Sumo PADI ref. SBDC049, of which there were only 1,000 made. To celebrate the 50th anniversary of their diving watch, Seiko released a number of limited editions in 2015, including the Sumo ref. SBDC027, limited to 2,000 pieces. This watch is particularly popular among collectors and demands an investment of around 1,700 USD, making it the most expensive three-hand Sumo diving watch. Significantly more affordable than the rare three-hand Sumos are solar-powered Sumo chronographs such as the ref. SSC795J1. The price point for this timepiece sits at about 650 USD.


The Seiko Sumo in Detail

The case of the Seiko Sumo is finished to a high standard and can easily hold its own against Swiss luxury watches. It is superbly polished and satin brushed. Even the in-house movements 6R15 and 6R35 have a fine finish, despite being hidden behind a massive, screw-down case back. Thanks to this case back and the screw-down crown, the watch is water-resistant to 200 m (20 bar, 656 ft). The fluted crown is easy to use, as is the unidirectional diving bezel, which for safety reasons can only be turned counterclockwise.

Stainless steel models like the SBDC031 and SBDC033 are available with a black or blue dial and matching bezel inlay and cost approximately 400 and 460 USD, respectively.

The reference SPB125J1 features a case and bracelet completely coated in black DLC and an orange second hand. This model also comes with a sapphire crystal and is limited to 7,000 pieces. Furthermore, each piece is numbered, with the number printed on the case back. Powered by the caliber 6R35, this timepiece costs approximately 790 USD in mint condition.

Seiko presented the ref. SPB181J1 in cooperation with the world's leading training organization for divers, PADI (Professional Association of Diving Instructors). This model features a blue and red Pepsi bezel and a red second hand, and is powered by the caliber 6R35. In contrast to the standard Sumo editions, the Sumo PADI has a sapphire crystal. This watch changes hands for a little over 700 USD.

The 50th Anniversary Seiko Sumo SBDC027

In comparison to standard Sumo models, the 50th anniversary edition has a number of upgrades that increase its overall value. Instead of the usual Hardlex glass, the SBDC027 features a scratch-resistant sapphire crystal to provide a clear view of the dial, and the case has a DIASHIELD coating to protect it from minor scratches.

The bezel design is more reminiscent of that of the Marinemaster 300 (ref. SBDX001). The shape of the hands and hour markers are also different. The latter are bar indices rather than large dots, and the rod-shaped hands are notably more slender than the sword hands on standard models. At its debut in 2015, the Sumo SBDC027's sold for around 1,000 USD; you can buy this watch on Chrono24 for approximately 1,800 USD in mint condition.


The Solar-Powered Sumo Chronograph

For some Seiko Sumo fans, a solar-powered chronograph may not quite fit the image we associate with the typical Sumo diving watch. However, the timepiece's characteristic case design with a recessed bezel heralds its indisputable place in the Sumo line.

Take the refs. SSC795J1 and SSC761J1, for example, both of which measure 44.5 mm in diameter. The case and the bracelet of the former model are made of satin-brushed stainless steel. As is common with almost all Sumo watches, the dial features luminous dot indices that, on the chronograph, are interrupted by subdials at 3, 6, and 9 o'clock and bar indices.

The chronograph is fitted with the solar caliber V192, which draws its energy from sunlight. According to Seiko, this caliber has an average deviation of +/- 15 seconds per month. You can buy this model with a blue and red Pepsi bezel for around 660 USD in mint condition.

The reference SSC761J1 is technically identical to the Pepsi version, but as part of the Black series it's completely black. This watch also features a red minute hand and cream-colored LumiBrite. Instead of a steel bracelet, the timepiece comes on a silicone strap with a stainless steel pin buckle. In mint condition, this watch demands an investment of about 680 USD on Chrono24.