1980s Seiko Wrist Terminal RC-1000 S501-4000 36mm

Here we have a rarely seen 1980s Seiko Wrist Terminal RC-1000 S501-4000, it was Seiko's first computer-connected watch. This watch is compatible with a variety of older computers, requiring an RS-232C interface cable and software, including the Apple II series, Commodore 64, and IBM PCs, as well as some compatible models. It also supports the Tandy Colour Computer and several versions of the TRS-80. Its 36mm rectangular black plastic case sits comfortably on your wrist thanks to the tapered 20mm adjustable bracelet. On the left side, an enclosed button for changing the various functions. The RC-1000 watch has six buttons and offers various functions, including displaying the day, date, alarm, and time. It also features a memo function, a schedule alarm, a weekly alarm, and a world time option. (which requires special software for some of these features). A light is activated by pressing and holding the SET button to brighten up the two-line DOT-Matrix display. On the reverse, a screwed-down case back engraved with the details of the watch, inside a Quartz Seiko Cal. S501 movement. It comes paired with its original tapered 20mm black adjustable bracelet. 

This watch is sold as "Watch Only" and, therefore, comes with no original Seiko box, accessories or paperwork. It comes paired with its original tapered 20mm black adjustable bracelet. The watch is from Circa. 1980s and is sold in worn condition, but overall it is in fair condition, as shown. The watch comes with our 12-Months NON-Waterproof Warranty.

Now this is a piece of technological history. This is the rarely seen 1980s Seiko Wrist Terminal RC-1000 S501-4000; it was Seiko's first computer-connected watch. This watch is compatible with a variety of older computers, requiring an RS-232C interface cable and software, including the Apple II series, Commodore 64, and IBM PCs, as well as some compatible models. It also supports the Tandy Colour Computer and several versions of the TRS-80. I suspect most of you don't have one of those lying around, so thankfully, you can set the time and alarm on the watch and use it like normal still. Snap it up today before I decide to keep it!

Reference : S501-4000
Movement : Quartz Seiko Cal. S501
Age : Circa. 1980s
Year : Circa. 1980s
Case Size : 36mm
Case Thickness : 10.5mm
Lug to Lug : 41mm
Lugs : 20mm
Condition : Pre-Owned
Box and Papers : None
Case Material : Black Plastic
Warranty : 12-Months NON-Waterproof Warranty
The wrist model's wrist size is 7inch

Seikos 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.) 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 Seiko Crown Chronograph a monopusher. Not stopping there, Seiko launched Japan's first true divers' watch, the Seiko Diver’s 150M, fitted with the automatic Calibre 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.