Seiko Limited Edition Diver\'s Prospex Black Series \'Sumo\' Automatic Black Dial Silicone Strap Men\'s Watch SPB125J1   Limited To Just 7,000 Pieces!   History:   Since Seiko made its first diving watch in 1965, Seiko has been exceeding the expectations of those whose sports require watches with truly professional specifications. Drawing from Seiko\'s roots, a \'Sumo\' series has become popular among Seiko fanatics. Sumo wrestling is the national sport of Japan. Once patronized by the emperors, Sumo\'s origins go back at least 1,500 years, making it the world\'s oldest organized sport. In its long history sumo has gone through many changes and many of the rituals that go along the sport that seem old were in fact conceived in the 20th century. The piece is so named due to its big and thick case style resembling that of a wrestler.   Style:   This Seiko Limited Edition Diver\'s Prospex Black Series \'Sumo\' Automatic Black Dial Silicone Strap Men\'s Watch SPB125J1 is inspired by the world of night diving. The watch has a full black coating reflects the murky and eerie depths of the deep sea where sunlight can no longer reach. Furthermore, like the light used by a night diver, the bright orange minute hand accurately indicates the right way. The impressionable orange accent of its design also make these watches perfect for daily use.    Functions:   Black hard-coating is applied to the stainless steel case of the watch whose design has long been popular amongst wearers by the nickname \"SUMO.\" The orange of the minute hand echoes the light flashed in the dark sea by the night divers which allows for the exact time to be read under dark conditions. Seiko\'s unique Lumibrite ensures legibility in the dark world of the night sea. The watch\'s markers are applied a special Lumibrite in the same orange color. The watches are water-resistant to 200 meters and has a screw-down crown to ensure the safety of the divers from any accidental operations.   Made In Japan: Firstly, for all you Seiko enthusiasts, this premium timepiece has been made and produced in Japan, indicated by the suffix ‘J’. Seiko watches made in Japan are notoriously hard to obtain outside of Japan due to the highest quality of craftsmanship and astonishing features that come in each individual timepiece. We have a range of Japanese watches here at Watchnation but in limited quantities, so if you are looking to add to your collection then this is the perfect place for you.     Key Features: Limited To 7,000 Pieces Diver\'s Style Prospex Family Black Series - \'Sumo\' Automatic Movement Cal: 6R35 70 Hour Power Reserve Auto & Manual Winding Black Dial Black Silicone Strap 45mm Case Thickness 12.9mm Length 52.6mm Stainless Steel Case Sapphire Crystal 200m Water Resistant 24 Jewels  Second Hand Stop Function   The Brand: Seiko   Seiko’s 135-year history has been marked by a ceaseless determination to innovate in every aspect of the watchmaker’s art.  By embracing this ethos, Seiko has been responsible for a string of industry-leading advances in the technology of time. Notably, the creation of the world’s first quartz watch in 1969. Or equally impressive the creation of the world’s first TV watch in 1982. And even more relevant today, with our abhorrent use of non-renewable energy sources, Seiko’s Kinetic. This watch had the ability to generate its own power from the movement of the wearer, it was released in 1988. The listed technological developments serve as evidence to illustrate the revolutionary impact which Seiko has had on the watchmaking world. They are also remarkably unique in that they manufacture every aspect of every watch in-house. They even grow their own quartz crystals and sapphires, hence why Seiko are renowned for being watchmaking experts.   If you have any questions please  click here Click here to join our  facebook  and  Instagram !