Overhauled SEIKO Royal Air Force Chronograph GEN1

I'm Japanese, so I'm tempted to praise the Japanese brands out of favor, but they are cool, to say the least!

Some of you may be thinking, "Quartz is so cheap!

But if you own this watch, I think you will realize that you are mistaken.

The diameter is 37mm, which is almost the same size as that used by the British military until then.

At 3 o'clock is the 1/10th of a second dial.

Second hand at 6 o'clock

The 30-minute counter at 9 o'clock

The 30-minute counter at 9 o'clock is the 30-minute counter.

The ◯P symbol at 12 o'clock indicates that promethium, a low-radioactive man-made element, was used to partially illuminate the dial and hands.

Let me explain the buttons.

The upper right button is chronograph start/stop

The lower right button is reset

The upper left button is the split-seconds chronograph. When the chronograph is running, pressing the upper left button stops the chronograph hand and pressing it again runs it to the elapsed time.

The lower left button is the crown.

For a better understanding of the operation of the chronograph, please click here to see a video of the chronograph.

Size

Diameter 37mm

Condition

Vintage watch, but in very good condition.

There is almost no day difference due to quartz.

Overhaul completed on April 2, 2022 (see last photo)