2021 Seiko Prospex "62MAS" Automatic SPB143J1
Ref: SPB143J1 (6R35-00P0)

2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
2021 Seiko Prospex "62MAS" Automatic SPB143J1
Regular price
Sale price
Unit price


Reference : SPB143J1 (6R35-00P0)
Movement : Automatic Seiko Cal. 6R35
Age : 2021/2030
Specific Age : April 2021
Case Size : 40.5mm
Case Thickness : 14mm
Lug to Lug : 47mm
Lugs : 
Condition :
Box & Papers :
 Box & Papers
Case Material :
 Stainless Steel
Warranty :
 12-Months Warranty
The wrist model's wrist size is 7inch

Points of Mention

This watch is sold with its original Seiko box and paperwork. The watch comes paired with its original 20mm Seiko bracelet with all links provided. The watch is from April 2021 and is sold in worn but very fair condition as you can see in the photos. The watch comes with our 12-Months Warranty.

For more photos see here - https://drive.google.com/drive/folders/1I-C2P9xuAAF07meOmSqIP3JUSPbvnm0R?usp=drive_link

4K YouTube video, skip to 15:02 - https://youtu.be/tB9h6Pexg9E

The Watch

Here we have a 2021 Seiko Prospex "62MAS" SPB143J1 that has a 40.5mm stainless steel case, a modern reinterpretation of their very first professional dive watch the “62MAS”. Curving in all the right places and coated in DiaShield, a Seiko proprietary material, gives the watch resilience to scratches and scuffs. The drilled lugs have a lug to lug length of 47mm and a thickness of 14mm giving the watch an impressive wrist presence. Satin brushed and polished shoulders transition with crisp lines. On the right side is a screw-down crown. The unidirectional bezel has deep notches for extra grip, the black 60-minute insert has silver numerals. A slightly domed sapphire crystal AR coated sits above a sunburst silver dial. Applied baton indexes filled with LumiBrite mark the hours, at 3 o’clock a framed date window. Broad sword hands with LumiBrite infill are complemented by a blue sweeping second hand. The text is precisely printed. On the reverse, a screw-down case back with the Seiko Tsunami in the centre, inside an automatic Seiko 6R35, 24 jewels, 21,600 beats per hour. The watch comes paired with its original 20mm stainless steel bracelet with brushed surfaces complete with a Seiko three-fold clasp and dive extension and comes with its Seiko presentation box and papers.

Personal Note

I've had this reference multiple times for sale and I really do believe this watch shows how much Seiko is capable of at the £1,000+ retail level. It gives the Swiss brands a run for their money in the diving world, build quality and spec are fantastic and the design is also well done, with real history and heritage behind it... What more could you want? Then make it pre-owned and you get yourself an amazing saving making it easily one of the best value divers out there full stop!

The Brand

Seikos' history began in 1881 when Kintaro Hattori established the K. Hattori retail and repair store. In 1892 Seikosha was established by 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.) was established in 1937. Seiko was 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). In 1956 Seiko launched Marvel as their first true in-house made watch; they continued to make this watch until 1959. Japan’s first chronograph watch was introduced for the 1964 Tokyo Olympics; it was called the Seiko Crown Chronograph monopusher. Not stopping there Seiko launched Japan's first true divers watch the Seiko Diver’s 150M fitted with the automatic Caliber 6217 which later was given the nickname “62MAS” by collectors. The company name was changed to the Seiko Corporation in 1990. Innovation at Seiko continues today with GPS Solar watches.