[neleus]

It seems that I'm the first on this forum who purchased any of SPB307J1/SPB305J1. The reason fro the purchase was first, because of its size, dial and look and only then because of its movement. Although I was searching for the reviews here, haven't found any. The only few opinions found are about 6R21. Is the movement so unpopular? Some debates are around it's precision, poor factory regulation, etc., so I decided to measure its timings and share here to get some opinions if it's factory adjustment is good enough for a regular guy, not collector, who doesn't bother with timegraphers and home watch laboratory. I only have a smartphone and a hammer in a toolbox, sorry . The result is below.

So there are couple of questions to experts.
1) How do we trust such applications on smartphones to measure timings? Is it enough to check that the watch needs regulation?
2) Can this picture actually tell that the watch has been factory-regulated? From what I see it looks almost perfect, no?

Cheers

 

[colonelpurple]

6R movements are very good
Alot of trolls around unfortunately
It is true that Seiko let a few out here and there that are not regulated well. Just take them back to the retailer if that's the case.
Enjoy your beautiful watch

 

[neleus]

6R movements are very good
Alot of trolls around unfortunately
It is true that Seiko let a few out here and there that are not regulated well. Just take them back to the retailer if that's the case.
Enjoy your beautiful watch

Thanks a lot From what I see there is no need to take mine. If the measurements are correct, of course.

 

[Nokie]

Looks like it runs very well. Seiko movements can be hit or miss at times, and looks like you have a "hit", IMHO.

Good luck. Hope you enjoy it.

 

[QuartzAficionado]

I would not trust the results as the 6R does not have 28,800 bph.

 

[neleus]

I would not trust the results as the 6R does not have 28,800 bph.

When I listen, I clearly hear 28800bph though.

 

[One-Seventy]

I would not trust the results as the 6R does not have 28,800 bph.

When I listen, I clearly hear 28800bph though.

No one is doubting that, as the app screenshot clearly shows 28800!

The 6R21 runs at 28800, as does the 6R64. The 6R35 is at 21600. The 6R range therefore does not have a single beat rate.

 

[colonelpurple]

No one is doubting that, as the app screenshot clearly shows 28800!

The 6R21 runs at 28800, as does the 6R64. The 6R35 is at 21600. The 6R range therefore does not have a single beat rate.

Correct, the 6R is designed to be able to run at 28800. I think you will find that 28k versions have an extra Jewel. Rgds

 

[BarryW]

I would not trust the results as the 6R does not have 28,800 bph.