This is the Hi-Beat beast that showed the horological world what the Japanese were capable of! The Seiko calibre 4522A has a rate of 36.000 bph, thats 10 beats per second, a frequency of 5hertz. This watch is in very good condition, but in need of a routine service.
I really like the design of this movement.
The performance is not terrible considering all the jewel holes have dirt in them.
Dial and hands are in very good condition.
The date mechanism is made up of a lot of parts!
Setting/winding/quick set mechanism.
Here you can see the gear train and the hacking lever after removing the train bridge.
The movement has a fair bit of dirt hiding in the jewel holes and under bridges.
The mainsprings are hard to find for this movement and this mainspring is in good condition and will be cleaned and oiled.
Movement cleaned and ready to be put back together.
The balance moving freely after fitting the cap jewels.
Mainspring cleaned and back in the barrel.
Clean gear train going back into the movement.
I get the train bridge in place before the barrel bridge as it holds the hacking lever in place.
Movement starting to come together.
I fit the winding/setting mechanism.
I now have a running movement.
Watch preforms well.
I now start putting the date mechanism back in place.
The date construction back together and ready for the dial