ROLEX EXPLORER and SEIKO DIVER'S RE TESTED AND COMPARED AFTER 9 MONTHS OF HEAVY USAGE.
Conclusion:With the price tag,
with all the day-date complication,
with the age circa
SEIKO 7S26(A)-0020 functions accordingly as expected.(including the SKX013)
With the price tag,
without day-date complication,
with COSC standard,
with the age circa 2001 (K series),
ROLEX 3130 function accordingly as expected.
I'm happy with both watches, plus the Pro Trek as well.
I'm returning the 7S26 gold plated to my dad. Hopefully he will be happy with the performance of the overhauled watch too.
If God willing, perhaps the next test will be a high end Seiko Movement vs Rolex Movement. I'm hoping to get a sample for the test, (I mean if I got extra cash to purchase the next watch and to do the testing, not to purchase just for testing :-)). The bulky Marine Master perhaps...?aaaa...just wait.
Japanese's high end mechanical movement is known for it consistency and reliability, can wait for the next purchase...no problem, not in hurry.
SOMEBODY NEED TO TEST THIS :-) ( as I couldn't find it in youtube).
(A3) ACCURACY AND RELIABILITY
My Marine Master is almost on par with my Submariner Date. Both watches are running at +5 to +7 seconds per month. For the Seiko Marine Master priced at 1/3 the cost of a Rolex Submariner, I would say that it is good value for the money. However, we have yet to see a Marine Master perform accurately for a 10 to 20 year period for they have not been around that long. Rolex Submariners from the 1980s can run very accurately for their age. Some owners claim accuracy of about +/- 10 to 15 seconds per month.
Both watches have been tested in the open ocean and not in some machine isolated a watch laboratory. Rolex had officially issued COMEX and US Navy SEALS professional divers with Submariners and Sea Dwellers for their jobs. Likewise, Seiko had issued Japanese Marine Biologists with their watches as well. Not to mention the countless testimonials from deep sea divers, their trust on Rolex and Seiko. Thus, I would say that they are “battle” proven over the years.
The down side to the Marine Master is that it must be sent back to Japan for maintenance. The regional Seiko service centers do not conduct servicing of the 8L35 movement. Warranty is only valid in Japan. On the other hand, Rolex service centers are around the world. This also makes the Marine Master a much rarer watch outside Japan when compared to the Submariner or Sea Dweller. Warranty is international.
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