Citizen’s 1964 Demonstrations of their Parawater Watches

In 1959 Citizen introduced Japan’s first waterproof watch, and they adopted the name ‘Parawater’ for the case and crystal design. The first model to use this technology was a Deluxe hand winder – see here:

By the early 1960s Citizen were producing automatic watches, using the ‘Jet’ rotor, and in 1964 the company staged an impressive demonstration of both the waterproof capability of their design and of the automatic winding mechanism. They did this by chucking them in the ocean! It a bit more sophisticated than that of course 🙂  A special buoy was designed to hold each watch, which ensured that the watch was held just below the surface whilst the motion of the waves kept them wound – here’s a cross sectional diagram of the buoy:

These buoys, loaded with Parawater Jet Automatics were then thrown from boats in the Sera of Japan and later in the Pacific:

I don’t know how long these buoys made their oceanic way – the trans-Pacific ones must have been at sea for a considerable time:

Of course at the end of their voyages, the watches were found to be happily ticking away 🙂

Here’s the notice on the top of the buoys:

Nice sentiment, nice test 🙂

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2 Responses to Citizen’s 1964 Demonstrations of their Parawater Watches

  1. Marko says:

    🙂 This is awesome! Thank you for showing this out! Never heard before, that there have been anything like this one.
    There was that some model out there in Himalayas for years and works, when it is found. If i recall right, i have read about it in here :).
    Sorry, Stephen, for the delay with an e-mail, which i promised to send, i try to work it out during next week.

    Regards, Marko

    • sweephand says:

      Thanks Marko 🙂 I had heard of this test, but I had not got these images before – they are from Citizen’s own news sheets sent to their dealers at the time. You’re right about the watch found in the Himalayas – it was a Super Jet, lost for a year and started up immediately when found:


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