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Seiko Sumo


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Seiko Prospex
Sumo Prospex Black | Perfect Conditions FULL Set
AU$679
Excl. shipping
Private Seller
Seiko Prospex
SPB103J1 Sumo
AU$766
Excl. shipping
Private Seller
Seiko Prospex
Sumo
AU$665
Excl. shipping
Private Seller
Seiko Prospex
Prospex45mm Automatic Diver's 200M Date Green Sumo Full Steel SPB103J1
AU$1,234
+ AU$60 for shipping
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Seiko Prospex
Sumo
AU$681
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Seiko Prospex
SPB101 Prospex Diver 200M Sumo
AU$945
Excl. shipping
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Seiko Prospex
SBDC031
AU$512
Excl. shipping
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Seiko Prospex
SUMO ZIMBE 15 SPB194J LIMITED EDITION
AU$2,724
Excl. shipping
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Seiko Prospex
SBDC033J1
AU$525
Excl. shipping
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Seiko Prospex
6R15-00G0/SBDC031 プロスペックス ダイバースキューバ デイト 自動巻き メンズ 極美品 箱・保証書付き_769810 中古
AU$760
Free shipping
Seiko Prospex
SBDC057
AU$870
Excl. shipping
Private Seller
Seiko Prospex
SPB101 Black Sumo Automatic Air Diver
AU$650
+ AU$70 for shipping
Seiko Prospex
SBDC031 JDM
AU$894
Excl. shipping
Private Seller
Seiko Prospex
Sumo Hulk
AU$1,004
+ AU$114 for shipping
Seiko Prospex
Sumo Black Prospex SBDC031 | Full MINT Set
AU$757
Excl. shipping
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Seiko Prospex
Automatic Sumo Blue Seiko
AU$1,702
+ AU$1,702 for shipping
Seiko Prospex
SPB181J1 Sumo PADI
AU$1,020
Excl. shipping
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Seiko Marinemaster
Prospex Sumo SPB083J1 Baby Marinemaster Blue dial
AU$1,360
+ AU$220 for shipping
Seiko Prospex
Divers Automatic Scuba "Sumo"
AU$860
Excl. shipping
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Seiko Prospex
SBDC033
AU$681
Excl. shipping
Private Seller
Seiko Prospex
SPB103 Green Sumo Automatic Diver
AU$720
+ AU$70 for shipping
Seiko
Prospex Sumo Solar SSC759J1 Japan Made divers men's watch blue dial 44.5mm solar
AU$894
Free shipping
Seiko Prospex
SBDC001 1st Gen Sumo (Scuba text)
AU$679
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Seiko Prospex
Sumo Blue
AU$787
Excl. shipping
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Seiko Prospex
SUMO SBDC069
AU$1,055
Excl. shipping
Private Seller
Seiko Prospex
Sumo 45mm Automatic Diver Steel Case Black Dial Steel Bracelet SPB101J1
AU$1,183
+ AU$60 for shipping
Seiko Prospex
Sumo SSC759J1 JAPAN
AU$700
+ AU$79 for shipping
Seiko Prospex
Solar Gmt Prospex Sumo Aqua
AU$858
Free shipping
Seiko Chronograph
Sumo Solar Chrono Limited Edition
AU$1,023
Excl. shipping
Private Seller
Seiko Prospex
Sumo SBDC005
AU$1,447
Excl. shipping
Private Seller

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Seiko Prospex
[V. GOOD] Prospex SPB103 Green Sumo Automatic diver
AU$694
+ AU$70 for shipping
Seiko Prospex
Sumo
AU$936
Excl. shipping
Private Seller
Seiko Prospex
SPB125J1 SUMO LE Black Series Dive Watch
AU$1,095
Excl. shipping
Private Seller
Seiko
SBDC033j1 Sumo
AU$883
Excl. shipping
Private Seller
Seiko Prospex
Sumo Prospex green 6r35
AU$843
Excl. shipping
Private Seller
Seiko Prospex
Sumo Japan Limited Edition
AU$1,532
Excl. shipping
Private Seller
Seiko Prospex
Sumo Watch Prospex Diver's 200m
AU$753
Excl. shipping
Private Seller
Seiko Prospex
Sumo Padi SPB181
AU$1,220
Free shipping
Seiko Prospex
Automatic Sumo Blue Seiko
AU$2,213
+ AU$151 for shipping
Seiko Prospex
SBDC033
AU$851
Excl. shipping
Private Seller
Seiko Prospex
Air Diver's SBDC031J Full Set 2015
AU$1,021
Free shipping
Seiko Prospex
Sumo Padi Limited Edition Prospex SBDC049
AU$1,203
+ AU$141 for shipping
Seiko Prospex
SUMO THAILAND 30TH ANNIVERSARY LIMITED EDITION SPB247J1 1991 PEZZI
AU$2,809
Excl. shipping
Private Seller
Seiko Prospex
SPB181J1 JAPAN PADI Sumo
AU$950
+ AU$79 for shipping
Seiko Prospex
SBDC001 Black Sumo
AU$702
+ AU$70 for shipping
Seiko
Prospex SSC759J1 Sumo Blue Dial Solar Chronograph Gent's Watch
AU$835
Free shipping
Seiko Prospex
Exc+5 SEIKO Prospex Diver Scuba SBDC031 Men's Watch Black Sumo 6R15-00G0 w/Box
AU$732
+ AU$31 for shipping
Seiko Prospex
セイコー/SEIKO プロスペックス ダイバー スキューバ ダイバーズウオッチ誕生50周年記念限定モデル SBDC027 / 6R15-02T0 自動巻き
AU$1,039
+ AU$312 for shipping
Popular
Seiko Prospex
Sumo Automatic SPB101
AU$1,206
Free shipping
Seiko Prospex
Sumo Prospex Automatic Divers Limited Edition 'Noosa' SPB347J
AU$1,889
Excl. shipping
Private Seller
Seiko Prospex
6R15-02T0/SBDC027 プロスペックス ダイバースキューバ デイト 自動巻き メンズ 805255 中古
AU$923
Free shipping
Seiko Prospex
Sumo Diver
AU$642
+ AU$152 for shipping
Seiko Prospex
SBDC031
AU$685
Excl. shipping
Private Seller
Seiko Prospex
Sumo Red Eagle SPB345J1 Philippine Limited JAPAN
AU$1,745
+ AU$79 for shipping
Seiko Prospex
SPB323J1 - Sumo Prospex Automatic Grey Dial Stainless Steel Men's Watch
AU$1,687
+ AU$135 for shipping
Seiko Prospex
sumo silver SPB029 limited edition
AU$3,149
Excl. shipping
Private Seller
Seiko
Sumo Prospex SSC759 SSC759J SSC759J1 Chronograph Watch
AU$893
+ AU$46 for shipping
Seiko Prospex
Sumo Ice Diver Special Edition
AU$1,236
Excl. shipping
Private Seller
Seiko
Raro Seiko SUMO SBDC001 Automatic - Black preX - Full Set
AU$780
Excl. shipping
Private Seller
Seiko Scuba
PRE OWNED SCUBA DIVER 7S26-0020 SUMO DIAL AUTOMATIC MENS WATCH
AU$1,022
+ AU$46 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.


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