What kind of Watch is the Seiko 7548-7000?
What kind of Watch is the Seiko 7548-7000?
The 7548-7000 was Seikos first attempt at a quartz powered dive watch and was adapted from the 6309 platform. As such it’s a tremendously over engineered movement and consequently one of my favourite quartz movements. The 7548-7000 was destined for the Japanese domestic market and sports an English/Kanji day wheel.
What kind of Dial does a Seiko dive watch have?
Seiko dive watches were popular with US Navy divers, regular grunts, and yes even amongst top brass. Variants: 7548-7000 Black dial and black bezel – SQ and non-SQ versions 7548-7009 Black dial and black bezel – SQ dial 7548-700A Orange dial and black bezel – SQ dial 7548-700B Dark blue dial and pepsi bezel 7548-700C Orange or (very rare!)
What kind of movement does a Seiko Slim turtle use?
Housed in the same case used on the Seiko 6309-7290 150m Automatic Diver “Slim Turtle” , it uses a Seiko 6309-7040 movement with a Quartz module modification designated as ref.# 7548 A high end movement in it’s time and until today considered as one of the best quartz movements Seiko made [movement also used in the Grand Father TUNA quartz model].
How is the Green Circuit Block secured on a Seiko water150mresist?
The green circuit block is secured by four screws, two of which also secure the battery-holding spring. With it removed and turned over we can see the quartz oscillator and reset pin, the latter coming into play when the crown is pulled out to the time-setting position.
Can you clean a Seiko 7548mresist in situ?
Obviously, attempting to clean it in situ is inadvisable but it is easy enough to remove by pushing the securing tabs from the rear.
Why are Seiko 150m quartz watches so popular?
Second, it is super accurate, especially when powered by quartz. Finally, you can break or lose it and not feel guilty about it because the entire package costs less than a Rolex bracelet. Since the early 80’s, Seiko dive watches, especially the 150m quartz model pictured here, have been popular with US Navy divers.
How to reassembly a Seiko water150mresist watch?
Following cleaning of all of the non-electrical movement parts in the watch cleaning machine, reassembly proceeds as follows: First up, fit and lubricate, as required, the clutch and stem followed by the setting lever, yoke and setting lever spring. Turn the movement over and fit the centre wheel and positive battery terminal connector