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  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
  • Prospex PADI 200M Automatic Sumo Ref. SBDC121
Seiko

Prospex PADI 200M Automatic Sumo Ref. SBDC121

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Prospex PADI 200M Automatic Sumo Ref. SBDC121

1 Review

With over half a century of expertise in producing professional dive watches, illustrious Japanese watch manufacturer Seiko understood the integral elements to construct tried-and-true dependable diving tool watches. Seiko’s “Professional Specifications” line, otherwise known as Prospex, consists of a family of ISO-certified diving watches with a minimum water resistance rating of 200m. Over the years, Seiko continued to dedicate themselves in producing astonishing timepieces with incredible performance and innovative features. Many of these watches have grown to be an icon well-loved by many in the watch world, as well as countless professional divers around the world.

Seiko Prospex PADI 200M Automatic Sumo Ref. SBDC121

In the pursuit of further connecting with dive professionals, Seiko announced their partnership with PADI (Professional Association of Diving Instructors), the world’s largest diving network with more than 136,000 individual PADI professionals who have issued 25 million certificates around the world. To celebrate this historic partnership, Seiko established a special range of dive watches under the Prospex line distinguished by blue and red colours, with the PADI logo etched on the dial.

Seiko watches are renowned for having quirky unofficial nicknames bestowed by Seiko fans themselves, perhaps representing a testament to the brand’s immense following. The nickname “Sumo” stems from a release from Seiko back in 2007 that bears numerous design cues resembling Japanese Sumo wrestlers. Seiko unveiled their latest PADI variant of the acclaimed Sumo model with a refreshing new visual style and compelling upgrades.

New Seiko Calibre 6R35 With 70 Hours Power Reserve

One of the key traits that contributed to the nickname “Sumo” lies in its substantial 45mm case, a reference to a Sumo’s large body build. Similarly, the Seiko Prospex 200M Automatic PADI Sumo Ref. SBDC121 carries a 316L stainless steel case diameter of 45mm with a case height of 12.9mm and a lug to lug distance of 52.6mm. This would be a piece you would definitely feel on the wrist, exhibiting a bold and pronounced wrist presence - as dauntless as a Japanese heavyweight Sumo wrestler.

As expected from Seiko, the finishes on the Prospex 200M Automatic PADI Sumo Ref. SBDC121 demonstrates great attention to detail with a satin brushed finish on the top of the lugs and a defined mirror-like polish at the side of the case. With additional polished touches above the brushed lugs, the mix of precise finishes is blended harmoniously to create an incredibly sleek appearance. The watch pairs exceptionally well with the supplied 20mm stainless steel bracelet, holding similar finishes that completes the overall sporty character.

Iconic Sumo Case Design

Many of Seiko Sumo lovers would be familiar with the chunky numerals on the bezel used in previous generation of PADI Sumo (Ref. SBDC049), it is delightful to see Seiko replaced them with “skinner” numerals on the Prospex 200M Automatic PADI Sumo Ref. SBDC121 which brings a classier and more streamlined look to the piece. The combination of blue and red on the aluminium bezel insert certainly evokes the feeling of a classic diver with excellent orientation when operating the buttery smooth 120-click unidirectional bezel. Operation of the screw-down crown at the 4 o’clock position is notably pleasing as well due to its deep knurling.

On the dial itself, the layout seems to be unchanged from its predecessor at first glance. However, the Prospex 200M Automatic PADI Sumo Ref. SBDC121 features a new set of slimmer hands and markers with refined proportions. The prominent red second hand adds a pop of colour to the deep black dial. Needless to say, markers and hands are generously coated with Seiko’s famous Lumibrite for a bright and vibrant glow in the dark. Above that, the dial is protected by a flat piece of sapphire for superior scratch resistance, keeping the dial crystal clear for many years to come.

Seiko's LumiBrite

Under the impressive exterior of the Prospex 200M Automatic PADI Sumo Ref. SBDC121 lies the Seiko 6R35 movement which is equipped with 70 hours of power reserve, a significant upgrade from its predecessor, the 6R15. The 24 jewel movement has a 3 Hz beat rate of 21,600 beats per hour.

The Prospex 200M Automatic PADI Sumo Ref. SBDC121 is an incredible new variant to the PADI collection of dive watches that delivers remarkable specifications ready for some ocean adventures. This latest addition has packed considerable improvements from its previous generation with a streamlined aesthetic while retaining all the best features of the watch that truly make it the icon it is today.

Specifications

icon-maker
Maker
Seiko Japan
icon-movement
Movement
Caliber 6R35. Seiko 24-Jewel Automatic.
icon-accuracy_range
Accuracy range
+25/-15 sec per day
icon-dial
Dial
Black
icon-luminous
Luminous
Lumibrite
icon-case
Case
Stainless steel
icon-crown_type
Crown type
Screwdown. Signed Crown

icon-lug_width
Lug width
20mm
icon-crystal
Crystal material
Sapphire crystal
icon-strap
Strap
Stainless steel
icon-water_resistance
Water resistance
200m
icon-dimensions
Dimensions
45mm in diameter, 52.6mm lug to lug, 12.9mm thick