Model History
The first generation of the Seiko Sumo was introduced in 2007 in black, blue and orange dial variants. The SBDC005 is the distinctive orange version, produced primarily for the Japanese domestic market. Although it was not a limited edition, it is encountered considerably less often than its black and blue counterparts.
One of the defining features of the first-generation Sumo is the absence of the Prospex “X” logo found on later models, together with the characteristic cursive “Automatic” inscription. Its substantial yet ergonomically shaped case, highly legible hands and markers, and powerful luminous display helped establish the Sumo as one of Seiko’s most recognisable modern mechanical dive watches.
The watch is powered by Seiko’s in-house 6R15 automatic calibre, offering manual winding, hacking seconds, a date display and a power reserve of approximately 50 hours.
Specifications
-
Brand: Seiko
-
Model: Sumo Automatic Scuba 200M
-
Model reference: SBDC005
-
Case reference: 6R15-00G0
-
Serial number: 382408
-
Production date: August 2013
-
Movement: Seiko calibre 6R15, automatic with manual winding
-
Functions: hours, minutes, central seconds, date and hacking seconds
-
Jewels: 23
-
Frequency: 21,600 vibrations per hour
-
Case material: stainless steel
-
Case diameter: approximately 45 mm excluding the crown and 48 mm including the crown
-
Case thickness: approximately 13.5 mm
-
Lug-to-lug: approximately 52 mm
-
Lug width: 20 mm
-
Crown: screw-down crown with Seiko “S” emblem
-
Bezel: unidirectional rotating dive bezel
-
Dial: orange
-
Crystal: original Seiko Hardlex crystal
-
Bracelet: new Seiko stainless steel bracelet designed for Sumo models, with safety clasp and diver’s extension
-
Maximum wrist size: approximately 21–21.5 cm
-
Additional strap: black rubber strap, not manufactured by Seiko
-
Accessories: Seiko presentation box, not originally supplied with this particular watch
Condition
The watch is preserved in exceptional, near-mint condition for its age. The stainless steel case remains beautifully presented, retaining its distinctive shape and contrasting brushed and polished surfaces. Only minimal signs of handling or wear may be visible upon very close inspection.
The black bezel and its markings are in excellent condition. The vivid orange dial is clean and very well preserved. The hands and applied hour markers are similarly well maintained, and their luminous material remains functional.
The original Seiko Hardlex crystal is scratch-free. The watch is fitted with a new Seiko stainless steel bracelet designed for the Sumo, suitable for wrists measuring up to approximately 21–21.5 cm. An additional black rubber strap, not manufactured by Seiko, is also included.
The supplied Seiko box was not originally paired with this particular watch and shows visible signs of handling and storage.
Service & Guarantee
The movement has been cleaned and inspected. All functions operate correctly. The watch is supplied with a 6-month functionality guarantee from the date of purchase.
The 200-metre marking represents the watch’s original factory water-resistance rating; however, water resistance cannot be guaranteed for a pre-owned watch. The guarantee does not cover damage caused by water or moisture.
