Seiko's history began in 1881 when Kintaro Hattori established the K. Hattori retail and repair store. In 1892 Seikosha was established making wall clocks. 1895 saw the production of their first pocket watch. 1913 saw the launch of their first wristwatch, the Laurel. In 1924 the first Seiko was manufactured. Daini Seikosha (now Seiko Instruments Inc.) established in 1937. Seiko listed on the Tokyo stock exchange in 1949. The Suwa factory became independent and formed Suwa Seikosha Co. Ltd. (now Seiko Epson Corporation in 1959).
The Sumo made headlines at the 2019 BaselWorld with the addition of the Cal. 6R15 movement and sapphire crystal. Its curved cushion 45mm stainless steel case gives the watch an impressive wrist presence. A lug to lug length of 51.5mm and a thickness of 13mm confirms this. Polished and brushed surfaces are expertly executed. The case gently curves for a comfortable fit. At 4 o’clock a screw-down crown. An aluminium bezel with deep knurling and 60-minute dive numerals is easy to set and read. Anti Reflective sapphire crystal sits above the dial. A matte black dial has applied disc indexes with LumiBrite infill. At 3 o’clock a date window. Broad sword hands are infilled with LumiBrite. Text is precisely printed. On the reverse, a screw-down case back with polished edges and a brushed centre, complete with the Seiko Tsunami embossed. Inside an Automatic Seiko Cal. 6R35, 24 jewels, 21,600 beats per hour. The movement has a quick set date, hacking, and hand winding functions. The watch is fitted on its Seiko 20mm rubber strap with a signed buckle.
Points of Mention
This watch is sold with its original Seiko box and Seiko paperwork. The watch comes paired on its original Seiko rubber strap with Seiko signed clasp. The watch is from November 2020 and is sold in worn condition, but overall this is in fantastic condition as you can see. The watch comes with its original Manufacturer Warranty.
The Sumo range by Seiko has always been one of the most underrated diver ranges they offer in my opinion, whilst my personal favourite is the Turtle family, this is a close second. Easily one of the best value for money families in the lineup, with their enhanced offerings and surprisingly well balanced wrist presence depsite their large size on paper.