[Biggeorge52]

I wondering if anyone with experience with these two movements can speak to the pros or cons. I've always been brand loyal to Seiko and their movements. But I have recently come across some smaller watch companies with really nice pieces containing the Miyota movements, I have never owned a watch that contains one. Any information would be appreciated.

 

[OnlyOneMore]

The 9000 series is a big step up from the NH movements.

I wouldn't hesitate for a second to break your brand loyalty to get a watch with one

 

[Biggeorge52]

great to know, thank you for the information.

 

[Biggeorge52]

I was looking at an older Benarus Moray with the 9015 in it.

 

[vmgotit]

The Myota 9015 is a dependable movement, the accuracy is is stable. Movement well made. In my opinion it is a much better choice over even the Seiko NH36. Vance.

 

[ffritz]

The 9000 series is a big step up from the NH movements.

I wouldn't hesitate for a second to break your brand loyalty to get a watch with one

^^ This.

Usually better accuracy, and it has a higher beat rate (4Hz vs. 3Hz), so the seconds hand glide is smoother. It's also 1.4mm slimmer than the NH35A.

 

[zztopops]

Fwiw, they chose a Miyota 821A. Then again also incorporates an exaggerated rotor design

 

[Davekaye90]

They're a reliable workhorse movement, no winding issues like the 2824, much slimmer than everything Seiko has short of the 6L35. The only downside, if you want to call it that, is the uni-directional winding which is responsible for the "miyota wobble" where the rotor rapidly freespins if you flick your wrist the right way.

Not a big deal, but some don't like it. Also the rotor usually isn't all that quiet. I don't currently own a watch with one, but I've had several in the past and would happily buy anothet watch with one. Like the NH/4R, the 9015 isn't a movement that should ever be serviced. Run it until it starts losing 30+ a day, and then toss it and replace it with a new one.

 

[Buramu]

The 90xx series is ugly, but super accurate and reliable and thin. The NH3x is ugly, bulky and all over the shop in terms of positional variance. Always go for a Miyota 9k when given the choice.

 

[TheBearded]

I'll take a 9xxx over an NH35/6 every day of the week and twice on Sunday.

Honestly... I'd probably take it over an 2824/SW200 given the option.

 

[OnlyOneMore]

I didn't mention it in my former post but the NH movements are very entry level automatics. Cheap to make, cheap to buy ($25ish) and therefor are often used in inexpensive watches (as low as $100, maybe even lower). The 9000 series on the other hand are a direct competitor to Swiss movements like the 2824 and similarly priced ($200) Much more money, much more capable in every way.

The NH to 9000 comparison is not really apples to apples. They don't play in the same league.

 

[Saswatch]

My experience with both the Miyota 9039 and 90s5 movements against the Seiko NH35 and NH36.

Thickness:
9X is slimmer allowing manufacturers to build thinner watches.
Verdict: Miyota

Automatic Winding:
NH series are extremely efficient with the automatic winding mechanism. You can achieve 44-45 hours of PR with basic wearing.
9X has that wobble and rotor spinning sound which is a subjective attributes to consider. The 9039 on my Baltic can sometimes stop running within 20 hours when not manually wound. The 90s5 on the Lorier gets closer to 40 hours.
Verdict: Seiko

Accuracy:
NH series gain time crown up.
9X series gain time dial up.
Both can be regulated to within 0 to 1 spd deviation.
Verdict: Tie

Beat Rate:
NH series is 3Hz.
9X series is 4Hz. The higher beat rate on the Miyota is like comparing a modern fuel injected DOHC vs a SOHC carbureted engine.
Verdict: Miyota

Price:
NH series could be bought for around $35. These days it's closer to $45-50.
9X series are priced around $100.
Verdict: Seiko

Date Complication:
NH series have day+date/date complications.
90s5/9039 are no-date complications. The 9015 has a date complication.
Verdict: Tie

Conclusion:
They both have merits but compete in different price brackets. If price was out of the equation, I would pick the Miyota over the Seiko.

 

[slcbbrown]

My experience with both the Miyota 9039 and 90s5 movements against the Seiko NH35 and NH36.

Thickness:
9X is slimmer allowing manufacturers to build thinner watches.
Verdict: Miyota

Automatic Winding:
NH series are extremely efficient with the automatic winding mechanism. You can achieve 44-45 hours of PR with basic wearing.
9X has that wobble and rotor spinning sound which is a subjective attributes to consider. The 9039 on my Baltic can sometimes stop running within 20 hours when not manually wound. The 90s5 on the Lorier gets closer to 40 hours.
Verdict: Seiko

Accuracy:
NH series gain time crown up.
9X series gain time dial up.
Both can be regulated to within 0 to 1 spd deviation.
Verdict: Tie

Beat Rate:
NH series is 3Hz.
9X series is 4Hz. The higher beat rate on the Miyota is like comparing a modern fuel injected DOHC vs a SOHC carbureted engine.
Verdict: Miyota

Price:
NH series could be bought for around $35. These days it's closer to $45-50.
9X series are priced around $100.
Verdict: Seiko

Date Complication:
NH series have day+date/date complications.
90s5/9039 are no-date complications. The 9015 has a date complication.
Verdict: Tie

Conclusion:
They both have merits but compete in different price brackets. If price was out of the equation, I would pick the Miyota over the Seiko.

Nicely done. Thanks.

 

[mleok]

I would pick a Miyota 9015 over a Seiko NH35 any day of the week, to me there is no reason to prefer a NH35 except possibly because of the lower price.

 

[MAD777]

Miyota 9xxx over Seiko NH any day.
That said, there's nothing inherently wrong with the NH. It's just that 9xxx is thinner & more refined and has a smoother sweeping second hand due the the higher beat rate (8 beats/sec as opposed to 6 beats/sec).

And I would pick the 9xxx over SW2xx/ETA because it's just as good and is reasonably priced to change out, instead of paying an arm & leg to service those Swiss movements.

Lastly, you have to be fly fishing or playing badminton to get that Miyota rotor to free spin, LOL.

Sent from my Pixel 4a (5G) using Tapatalk

 

[ronkatct]

My 2 Cadisen diamond watches have the 9015 and both these watches are accurate out of the box. My Watches with the NH35/36 are less accurate out of the box unless adjusted. The Miyota 9015 has the Miyota whirl which is music to my ears. Some find that sound annoying.

 

[manolito]

My experience with both the Miyota 9039 and 90s5 movements against the Seiko NH35 and NH36.

Thickness:
9X is slimmer allowing manufacturers to build thinner watches.
Verdict: Miyota

Automatic Winding:
NH series are extremely efficient with the automatic winding mechanism. You can achieve 44-45 hours of PR with basic wearing.
9X has that wobble and rotor spinning sound which is a subjective attributes to consider. The 9039 on my Baltic can sometimes stop running within 20 hours when not manually wound. The 90s5 on the Lorier gets closer to 40 hours.
Verdict: Seiko

Accuracy:
NH series gain time crown up.
9X series gain time dial up.
Both can be regulated to within 0 to 1 spd deviation.
Verdict: Tie

Beat Rate:
NH series is 3Hz.
9X series is 4Hz. The higher beat rate on the Miyota is like comparing a modern fuel injected DOHC vs a SOHC carbureted engine.
Verdict: Miyota

Price:
NH series could be bought for around $35. These days it's closer to $45-50.
9X series are priced around $100.
Verdict: Seiko

Date Complication:
NH series have day+date/date complications.
90s5/9039 are no-date complications. The 9015 has a date complication.
Verdict: Tie

Conclusion:
They both have merits but compete in different price brackets. If price was out of the equation, I would pick the Miyota over the Seiko.

well compared. if the nhxx crisis continues, maybe we'll see more brands using the 9015 (though i expect increases in street prices...)

 

[Sir-Guy]

Paging @docvail on this. He has extensive experience with both as it relates to microbrand manufacturing.

 

[jdippey]

For me, the two biggest pros of the miyota 9000 movements is the thickness and the beat rate. The thickness allows it to be put into dive watches and still keep the watch under 12-13mm thick while maintaining 200-300m of water resistance. The beat rate makes the second hand move more smoothly across the dial and feels more premium.

 

[SMP300M]

Watch forums, websites, and manufacturers often use the term "upgraded" when referring to Seiko 4R35/NH35 and 6R35, compared to old 7s26.

• 4R35/NH35: hacking & handwinding (upgraded vs 7s26, but only catch up to other movements). 21,600 bph (same as 7s26, but worse than Miyota 9xxx). Accuracy -20 to +40 spd (same as 7s26).
• 6R35: 70hr power reserve (yes, this is truly upgrade). hacking & handwinding (upgraded vs 7s26, but only catch up to other movements). 21,600 bph (same as 7s26, but worse than Miyota 9xxx). Accuracy -15 to +25 spd (better than 7s26).

Just be aware when you read the term "upgraded", what is the reference they are comparing too. 4R35/NH35 is still worse than many/most competitors. 7R35 does have some upgrades, but it is still 21,600 bph. The issue with 21,600 bph is that it is not precise; there are a lot of variation. Just put it on timegrapher, you can see the ticks are all over the place. Hard to regulate the movement to be accurate.

Miyota 9xxx is 28,800 bph. It's spec'ed accuracy is not very good, only -10 to +30. But on timegrapher, its beats are consistent. If regulated, it will run more precise/accurate than Seiko's 21,600 bph.