It is always nice to know which watch was the first, the thinnest, the most this or that… It is extra nice to have one of each. With Citizen that is not so easy because there are so many models! One of the most collectable lines is the one of the diving watches, so which is the first real diver that Citizen made?

The first Japanese water resistant watch was the famous Parawater, launched in 1959. You can read about it HERE. But, that was not a real diver. In fact the first diving timepiece was this one, the one in this article, the Jet Autodater para 120m water. At about the same time another model was made, the Autodater 200m , the skin diver. Read about it HERE.

Here it is, the Citizen Parawater 120m Jet Autodater (ADRS51301-DA)

Unfortunately the manufacture date can not be easily determined because there is no serial number but it is estimated to be somewhere around 1962 . Find out how to date a Citizen HERE.

The case is made entirely in polished stainless steel, with a screw in case back and a bidirectional friction type bezel. The crown is non screw in. The water resistance is obtained by using a rubber O ring and it is enough for 120m. Not bad I would say. 🙂 The acrylic crystal is domed and gives it a vintage feel. The dial is black, with luminous large trapezoidal hour markers and steel hands. The hour and minute hand have a black tip with a luminous central line where the black part is. The black painted bezel has a luminous dot at 12. On the black dial we see the date, located in a traditional way, at 3 o’clock.

The movement is a 19 J jet caliber, no hand winding. The date changes by advancing the hands pass midnight and back to 21, and again midnight… It is not a quick set date. The seconds don’t hack. So… not a phenomenal movement but one of my favorites. (the Jet – with a ring rotor and you can read about Jets HERE) This one is one of the earliest types, with no hand winding. Just a tool watch with a simple, robust movement.

The strap that completes this awesome watch is a Tropic rubber one. Perfect match! Now, all I have to do is strap this piece of history on my wrist and take it diving! Well.. desk diving. 🙂