Seiko SII Caliber NH35

Seiko (SII) Caliber NH35A

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Seiko SII Caliber NH35

Manufacturer Seiko
Caliber Number NH35A (aka NH35)
Movement Type Automatic
Jewels 24
Vibrations Per Hour
21,600 bph
Lift Angle 53 degrees
Shock System Diashock
Power Reserve
41 hours
Winding Direction
Bi-directional
Hacking? Yes
Hand-Windable? Yes
Diameter 27.40mm (outside) / 29.36mm (casing)
Height 5.32mm
Functions Hours, minutes, central seconds, date calendar
Country of Manufacture Japan/Maylasia
Known Brands
Seiko, Invicta, Vostok, Lum-Tec, Spinnaker, Minus-8 Layer (add more in the comments below)

keepthetime-468-60

 

 

The Seiko/TMI/SII caliber NH35 is a hand-windable, hacking upgrade from the Seiko caliber NH25. It is one of the world’s most popular automatic movements and is widely available in many affordable/microbrand watches.

Accuracy

In the technical documentation, Time Module claims that the NH35A accuracy range is within -20~+40 seconds per day under normal conditions. They recorded these accuracy measurements without the date complication being active. This shouldn’t have any noticeable bearing on the accuracy, but it’s interesting nonetheless.

Note: When you attempt to get a measurement of your watch’s accuracy, it’s important to make sure your watch is fully wound or the lack of power reserve may skew the test results. TMI states that measurements should be done within 10-60 minutes after the movement is fully wound up.

Winding the Mainspring

So what does fully wound up mean? The NH35A should be fully wound after about 55 manual turns of the crown.

NH35A Also Known As…

It’s also important to note that the Seiko NH35 movement is basically an unbranded version of the Seiko caliber 4R35. for example, the NH36 is an unbranded version of the 4R36 (day + date) found in the Next Generation Orange Monster. More information here.

Crown Position Functions:

0 (against the case): Clockwise = Manual Winding / Counterclockwise = Nothing
1 (pulled out one click): Clockwise = nothing / Counterclockwise = Date setting
2 (pulled out two clicks): Time setting clockwise and counterclockwise

Seiko NH35A movement in a Minus-8 Layer watch

NH35A in a Vostok Jurgis Kairys

Further Information and Reading:

Interesting Note: Time Module aka Seiko Instruments labels the NH calibers as part of the “Basic” Mechanical Series. They also have NE calibers that are labeled as “Premium” Mechanical Series.


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Phil Savory
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Phil Savory

I’ve an INVICTA divers style watch with this movement…bought it about 6 months ago…honestly I can’t complain…gains about a minute every 11 days never ever take the watch off..built like a russian tank £106:00 plus p+p…happy days….very smooth rotor…very quiet..10/10…..Phil.

john molyneux
Guest

Thanks for your review phil,i have a few wstches with the nh35a in and to be honest,i’ve not wore them yet but if losng or gaining 1 minute every ten days or so is right then that is great for an automatic.i’d read that this particular movement was very good so if your review is right then im happy.
John

Brandons
Guest
Brandons

I agree that this NH35A movement is truly impressive for the cost and its accuracy. I have an INVICTA which cost about $100 but keeps on time with the NIST Atomic clock on a winder or when worn within 10 seconds per day, and I have checked it to a closer tolerance than that recently. For an inexpensive automatic movement it has performed far better than an Orient M-Force which cost 3 times as much.

John Wood
Guest
John Wood

I have a 122 dollar seiko 5 sports watch w/4R36A movement–when worn regularly it is -3 seconds a day.

Bert Kanne
Guest
Bert Kanne

I have quite a few watches with NH35a. One in particular in an Invicta Prodiver 17042 is COSC accurate and it has never been opened or calibrated. How is this possible?

Larry
Guest
Larry

I don’t know but my Breitling and Omega NEVER kept time as well. Pro Diver running +0.6 Spd. I got lucky.

Larry
Guest
Larry

After 2 months it now lost 5 minutes. Still beats my Breitling with an ETA 2428!

John T
Guest
John T

I have a PolAm shark mesh diver which has the nh35 in it – I adjust mine about a minutes every 10 to 14 days, so I think this movement works well if worn daily like I do

Steve
Guest
Steve

I have a Momentum M30 with the NH35A movement its been back to Momentum twice and it still loses time. About a minute every three days. I have a Deep Blue with the Miyota 9015 movement and it keeps between + or – 5 to 10 seconds a day. I have the Seiko Monster II with the 4r36 and it its within a minute a week.

Berton Kanne
Guest
Berton Kanne

My Orient Mako USA, though not hacking with their in house movement, is far more accurate than either of my Invicta watches that have the NH35a. I am sure my are NH35a’s are not made in Japan

Brian
Guest
Brian

MWC Kampfschwimmer Autos also use this movement. Be advised that when MWC needs to top of an order (run out of NH35a’s) they will substitute Sellita SW 200’s. The chances of getting a Sellita is small though.

Edward D.
Guest
Edward D.

I bought an Invicta Pro Diver with this movement. It looses 3 seconds each day, pretty precise.

Heff
Guest
Heff

Same here. What a workhorse. Just wish it were decorated better.

CM
Guest
CM

Same. -3 spd. From the box. No special treatment. Wear most of all of the time.

Charlie
Guest
Charlie

I recently got an Invicta Pro diver 8926OB with this movement, and out of the box, started off +15 seconds a day! By the 3rd day was up to +26 seconds in 24hrs. I exchanged it, and out of the box, it started off + 3.5 seconds a day, and after 1 week, it running at +2 seconds a day! You just have to be lucky!

Jeremy
Guest
Jeremy

There is a very good chance that the first Invicta watch you bought might have been magnetized. It’s always good to purchase a demagnetizer machine off of eBay, they’re like 10 bucks, the little blue machine with the red button they, work great and I use them on all my automatic watches. Unless you own a automatic watch that has a high Gauss rating in the movement.

Wing
Guest
Wing

This is a very helpful tip! Thanks Jeremy.
I am lucky that my DELTAt Umi is only losing 1-2 seconds in 24 hours. But I will look into a demagnetizer just in case.

gybognarjr
Guest
gybognarjr

I have an Invicta Grand Diver, it is as big and heavy as a wall clock and thick as a Hero sandwich. The NH35A caliber is surprisingly good, looses 3-4 seconds in 24 hours. The watch is a good value at $104.00 and if used in diving, one needs no extra weights to go down.

Seiko Saat
Guest
Seiko Saat

Seiko NH35A really good mechanism.

rebecca
Guest

Jiusko watches also feature this movement in a variety of models at affordable cost

graysclassics
Guest
graysclassics

Bought an Invicata Diver with this NH35A movement. Gained 5 MINUTES per DAY…. had it regulated, ok for a couple of days, then gained 15 MINUTES a day…. must have been unlucky!

julio
Guest
julio

These movements are regulated and built by machines so is better to leave them alone because having them regulated by a human being they will never be the same…

Ralph
Guest
Ralph

How is that a logical comment in any way? If turning a screw put there for the purpose of regulating a watch one way makes the watch run faster or the other way to run slower how does it matter if a machine or a human turns it? It obviously went out of spec. so the screw needs to be turned to compensate….. And the guy said it worked for a bit so that negates your comment entirely. He got unlucky and it happens, even with expensive watches. Simple logic.

Tim G
Guest
Tim G

Magnetised maybe?

Manny F.
Guest
Manny F.

It’s magnetized! That’s what happened to me. Take it to your watchmaker and have him demagnatize it back to normal. Don’t try adjusting the speed until you do this FIRST.

Curious
Guest
Curious

I have a MWC kampfschwimmer diver with a 24 jewels and 41h of power reserve. I wondered what the chances are for its movement to be a NH35a. I have this movement in my Seiko and I am very pleased with it. Very accurate and affordable. It is not less accurate than the movement in my Omega, which is far from affordable. Fingers crossed my new MWC diver has an NH35a.

Jay
Guest
Jay

This is my daily wear mechanism. Can this movement/caliber be overwound? Can the screwdown threads wear out easily? I regularly use a counter-clockwise winder (every evening) and/or have the habit of unscrewing the crown and making a dozen or more clockwise turns at the normal position. I realize that the watch can hold 3+ days of “charge” at a time, but I’d rather keep it spot on. Any concerns/cautions with my practices?

Mr. Brooks
Guest
Mr. Brooks

The NH35A movement cannot be overwound there is a mechanism inside that prevents this. You’ll be fine.

Ralph
Guest
Ralph

if it’s your daily wear watch it should already be fully wound if you are even remotely active during the day. You do not need to manually wind the watch at all. Most watches, if the wearer is semi active, can wind fully in 4-8 hours.

Jeremy
Guest
Jeremy

All watches that are automatics are different on the winding process. I own some that I only have to wind 15 to 20 times, I have other watches that I have to wind 40 to 50 times, so it honestly is all about leading and figuring out the watch you own. Some watches will tell you in a manual, some don’t have a manual so you can look it up on YouTube sometimes and they could tell you. on my watches that are skeleton dials or if you can see the coil spring , I will actually use a flashlight… Read more »

John Ferguson
Guest
John Ferguson

We use a lot of MWC divers watches professional (marine salvage) and of the 20+ we have most of the new ones (last 2 years) are NH35A, before that some were NH35A, some Miyota and some were SW200 but they are using almost all NH35A according to Axel Schmidt who I normally deal with at MWC in Berlin. I think the NH35A seems great with good power reserve and seems to be accurate to a minute a week on average so all good.

Jerry
Guest

I have worn an invicta 0420 titanium diver with this movement for four years. Its accurate to about three minutes per month. Very nice watch and worth every penny. The crystal is still unscratched except for a near-invisible scratch on the face made when my arm swung against the sharp point of a deck screw in my garage a few years ago, and my watch face hit it a glancing blow.

Laurence
Guest
Laurence

I have a new NH35A-based watch and I have been very pleased with the accuracy after 4 weeks of daily wear. Every automatic watch I have ever owned has lost time each day. But this NH35A actually gains time every day and the great news is that the time gained has been no more than 20 seconds per week! My last watch was NH25A-based and it tended to lose about 9 to 10 seconds per day, which is not bad at all for a sub-$100 automatic. I expected my NH35A would be about the same but with hand-winding and hacking.… Read more »

Jeremy
Guest
Jeremy

I will say that I will never buy an Invicta watch as long as I live no matter what movement they put in it for the fact being that I purchased it from a authorized dealer in. January 26th 2018 and wore it one time to the grocery store on February 3rd 2018 for about an hour and the faux hex bolt on the rotating bezel broke and I had to send it in to get repaired. first off, I had to pay $28 dollars to send it in and for the inspection fee, and we are talking about an… Read more »

carlos
Guest
carlos

invicta divers con nh35, fantastico calibre de seiko muy preciso +3 seg aproximadamente x dia, con los cambios de temperatura y posiciones varia ya que no es de grado cronometro, pero no es mucha la diferencia de variacion en el frio al dejarlo sobre la mesa a una temperatura de unos 10 grados celsius seran unos 4 a 6 segundos cuando mucho 10 segs. de variacion de adelanto en temperatura de frio, al ponerselo en el brazo nuevamente y traerlo durante el dia variara los segs. normales de adelanto. muy fiable preciso y robusto., suele ir mas preciso que relojes… Read more »

C. Dilg
Guest
C. Dilg

I have about a dozen watches with the nh35a, 5 with the 282, 4 with the 200, and 2 with the 7750. There is no comparison with the 7750 but as yet I do not own a 500. I buy only automatics or mechanicals-usually auto’s. I can feel the mechanical friction produced by the nh35 and hear the rotor when working with my hands. I have as yet to break a movement but have cracked several crystals and have pitted one with A/C coil cleaner. The sapphire was pitted so bad I could not read the dial so I took… Read more »

Brandon Blanchard
Guest
Brandon Blanchard

Hard on watches? Nah! Last I checked, shooting them from 500ft is the norm!! Lol! Sounds like fun!

Socrates
Guest
Socrates

At 500 ft, to hit a watch face, I’d say you also proved you’re a pretty good shot!

Alan
Guest
Alan

I have had 2 Invita $90 NH35A Automatic Diver Watches for over 1.5 years now and they have functioned flawlessly. Like a few of the other reviewers I gain approximately 1 minute every 11 days with both of them. That’s not much different in time off as my Hamilton 7750 X-wind. I think, for a wear every day and don’t care what happens to them kind of watch, they are one of the best buys on the market! They really are fairly good looking, are 200m water resistant, have a see through exhibition back and take a pretty good beating… Read more »

dan cotton
Guest
dan cotton

I have the mwc vietnam field watch homage,and it’s great No noise,very sure winding mvmt,and accurate.For price it’s amazing,Just feels like class when wearing it.Will look for it in other watches

t-dab
Guest
t-dab

The Unimatic Modello Uno features the robust/no nonsense Seiko NH35A. Clean watch, Clean movement.

Miguel Maldonado
Guest
Miguel Maldonado

Helm Watches
Vanuatu wach

johnnyjohnny
Guest
johnnyjohnny

going thru this thread i am clicking on some watches with the NH35A that are mentioned…the vanatu is vanacoooL!

Robert Polverari
Guest
Robert Polverari

Just got an Invicta divers about 2 weeks ago with the NH35A movement. I am very pleased for 110$ (CAN) that I paid for it. It looks great and as for keeping time, I cannot complain. Must of got lucky because it is at between ± 1-3 seconds per day. Testing it using the computers internal clock. If its based on the 7S26 movement which is found in my Seiko’s diver that I bought in 1996, than I am not going to complain. That watch is 20 years old and keeps better time than my Swiss mechanical movements (±2 spd)… Read more »

Mark Diaz
Guest
Mark Diaz

I have this movement in my Invicta 8928A. It runs about a minute fast every three days. Not exactly a precision movement but it is “a workhorse” It has never given me problems except for the unacceptable inaccuracy in time keeping.

Roberto Polverari
Guest
Roberto Polverari

Have you tried to adjust the timing yourself? Not very difficult just need to be very patient. When you move the lever to either + or -, use a wooden toothpick clipped at the end. I strongly suggest that you use a magnifying eye piece do you can see the diplacemnt of the lever properly. I adjusted my Seiko 7S36 movement like this. Was running 20 spd too fast when I received it. Got it down to +1-2 spd, until my 2 yr old got a hold of it and decided to test it’s impact resistance on the floor………many times.… Read more »

A. David
Guest
A. David

I gasped when I got to the end of your post! I no longer have that age around me but your experience Proves my purchase was well invested. Thanks

johnnyjohnny
Guest
johnnyjohnny

a long time ago i too would adjust my seiko diver 7s36 movement with the eyeglass/toothpick method and got it more accurate than my new rolex datejust chronometer at the time. i was again deciding to get another seiko diver classic but couldn’t do it for $250 (japan model) when i got my invicta 9110 diver this week with the nh35 movement for $92. that the nh35 has winding is a huge difference. i know the 200m water resist invictas are not dive certified, but since i don’t dive, the convenience of a windable movement outweighed getting the seiko diver.… Read more »

johnnyjohnny
Guest
johnnyjohnny

have done this with classic seiko divers before. after 2 tries with the toothpick you usually have a watch running much more accurate than a new rolex. how do i know? i’ve had several new dealer rolexes that couldn’t compare to an adjusted basic seiko movement. a datejust and a submariner…about 10 years ago. both chronometers. if you don’t have $5000 these days, you can’t go wrong with any of these watches that have the NH35 in them. a company like seiko that makes a great movement, hackable even, and companies that make generally xlnt quality cases such as invicta,… Read more »

Paula
Guest
Paula

What does the A mean? Is there a difference between NH35 and NH35A? Is there a NH35B C or D?
Great site!

M Heisey
Guest
M Heisey

I assumed the “A” was and indicator for “automatic”

Stephen Barry
Guest
Stephen Barry

Is there an M for manual wind?

A. David Griffin
Guest
A. David Griffin

I have learned so much in the last 15 mins reading these posts. I had no idea such knowledge was available, let alone necessary. Could someone possibly inform me to what “hacking” refers to? I have my ideas, but I couldn’t possibly think that people actually ‘hack’ into a nice watch.

Leroy Nicewatch
Guest
Leroy Nicewatch

Holy shit thank you for this info but wtf is the A for? As in, NH35(A)?

Matt
Guest
Matt

Leroy, it stands for Anus.

Brandon Blanchard
Guest
Brandon Blanchard

Lmao!! ANUS!! NH35ANUS

A. David
Guest
A. David

Just had to announce to those who’d truly appreciate the news: After reading a few threads on this and another site I felt comfortable enough to make my first Invicta Pro Grand Diver 90201 purchase earlier this afternoon. I’ve never purchased a watch of this quality. Thank you for providing such insight and depth – while making it comfortable enough to keep up – a little. It’s obvious I’ve stumbled onto something like enjoying a fine wine…that may cause me to have long conversations with my wife as I learn and want to learn more. Thank you! Yea, I’m excited… Read more »

t-dab
Guest
t-dab

Good choice A. David, congrats!

Larry
Guest
Larry

Mine lost 0.56 Spd the first month and now runs dead even with my Citizen Navihawk AT. Shouldn’t be possible but I got very lucky

Larry
Guest
Larry

Losing 5 minutes every 30 days now. Not too shabby for $70.00

Rik
Guest
Rik

Seiko nh35a
Great movement,,
I saw even Chinese watches use this seiko movement
Seiko selling policy probably…but iT is a pity

Ross W Williams
Guest
Ross W Williams

In the article it asked to add companies that use this movement. Android-USA now Aragon watches has been and continues to us the NH35a. They also use its bigger and better brothers in some of their watches. I would look into this company or used or new stock Androids. I have three of them and love them all. The Android Endeavor, Rotator Limited Edition (83/150) in Rose Gold and the regular Silverjet. All of those watches us the same NH35A or NH35. The A does run quite more accurate in my Endeavor vs the Rotator without the A. All of… Read more »

Bert
Guest

I have a Swiss Military Conger. Xlnt in every way except it does not fit me. It is extrememy accurate and its Swiss quartz movement. I have an Android Silverjet AD780 as well. It has a Miyota quartz movement and seems to be bullet proof. I would like to sell the Conger. Its new in box. Contact me if you or someone you know is looking for one and wants to save big.

Mac
Guest
Mac

Wow!, your Conger Nero Auto by CX Swiss Military is not a watch; …it’s an amphibian timing tank! Wow!!!
Congrats!
This is a great forum; I’m learning about concrete things and watches I’d never heard before. Great site!

Ross and or ScrapHMS and or FerroChrome99 on other forums.
Guest
Ross and or ScrapHMS and or FerroChrome99 on other forums.

To Mac and Bert, thanks for your comments, Bert, I’ll ask around, and Mac I’m posting some pics with this post. I’ve been really busy stalking Land Rover forums since I took over my mom’s old one after I sold 2011 car to save up and pay cash for my new/used F250 big boy toy again. So unfortunately the Rover is taking the expendable income for watch collecting in the 85-150 buck range. I would like to add to the forum in general. Could we please stop adding Invicta’s I know some of you swear by them but to me… Read more »

Ross and or ScrapHMS and or FerroChrome99 on other forums.
Guest
Ross and or ScrapHMS and or FerroChrome99 on other forums.

Oh on me. I’m 6’8″ 330 lbs. With a hand span of over 12″ and at least 9.75″ wrist size for watches to feel comfortable. So my ridiculous huge Conger Nero Auto looks normal sized. Similar to a 16 or 24oz aluminum can looks normal in my hand like a 12oz coke can in everyone elses. Too many watches are dainty and womanly with small face sizes.

Tim Mills
Guest
Tim Mills

I have recently acquired one of these Lew & Huey Orthos divers with the NH35.
Please take a look at this video from the guy behind the brand and tell me what you think of this instruction for lateral pressure when returning the crown? I’m wondering if it’s a case design problem? Mine is very tricky! thanks.

A. David
Guest
A. David

I’ve had the trickiest time posting a photo as promised. Please advise.

Walter Licker
Guest
Walter Licker

I have the Invicta 8926OB with NH35A movement. It was running +20 s/d, so as I’m not a diver I decide to improve it’s accuracy. I used a toothpick with jewellers eye glass. It then ran just -2 s/d, so I adjusted it again and now it runs +2 s/d. I leave it at rest at night either crown down or crown up and by the morning it’s back to status quo. Now I am a pensioner time has a different meaning to me and this watch is like having a pet. It needs to be looked after and it… Read more »

Joe
Guest
Joe

It took me 2 weeks of trial/error to adjust my Invicta N35A to be +3 sec/day. I sync my watch every morning.

Kelvin
Guest
Kelvin

By the way, does this movement have an indirect second hand drive like the miyota 8215 or the direct second hand drive like the ETA 2824-2. This makes a difference because if you swing your hand rigorously while doing a sprint with the miyota 8215 or the 7s26 powered watch, the second hand stops momentarily, not by much, about 0.2 – 0.5 secs but when it stops by 0.5 secs everytime you swing your arm hard, it adds up.

WC Licker
Guest
WC Licker

I can’t do anything rigorously at my age I haven’t got the strength to pull a cat off a window sill. Just to you updated, I have been to Spain for ten days. The average temperature was 35 degC and my watch kept perfect time every day. As soon as I returned to the UK, after the first day 22 degC, it was +2sec/day. Weird, I guess I’d better go live in Spain to keep my watch happy. Interesting fact it’s better for a watch to run fast then you will never be late for an appointment. Also it’s easier… Read more »

D Bolton
Guest
D Bolton

bought an invicta 8926ob with this movement four months ago – out of the box it was running just over plus one second a day and this has continued – have purposely left it alone completely not even adjusting the date and in exactly 121 days it has gained 129 seconds. crown screws down easily and it is completely waterproof when snorkling in about 15 feet of water – not been diving as yet.

A. David
Guest
A. David

Good day, I’ve noticed over the past weeks so my Invicta Grand Pro Diver has gained 2 mins. I,m concerned because it became such an apparent issue so quickly. Please give me some reference, perhaps from previous threads. I will search as well. Also, I still cannot figure out how,to post pics of my watch.

johnnyjohnny
Guest
johnnyjohnny

might help to know if this is an old or new watch…what conditions it’s used in. i have a number of nh35 invictas and they start out gaining about a minute a week out of the box but generally settle down a bit. by the way between 8 and 9 seconds gain a day without being adjusted is not a major departure from auto movement performance unless it is a chronometer.

Lars Midthun Portch
Guest
Lars Midthun Portch

I have a Seiko SRP659J and a SRP777 (K) “Turtle” with this movement,the NH35A. Both run crazy accurate. However the SRP659 is a J,a domestic and it ran +2 spd out of the box. The SRP777 is a Malaysia made Seiko and it had to go in some adjusting before it became spot on. The winding on the SRP is so smooth,soo smooth…..

Marc
Guest
Marc

This is a great thread and site.. I’m expecting delivery of an invicta diver with the NH35a and was intersted in the movement quality. This thread has answered all my questions. Well done all!

Ian Masterton
Guest
Ian Masterton

The latest Gigadet Sea Ground subs have the NH35 fitted. Just for info.

Yankeexpress
Guest
Yankeexpress

In addition to the newer Gigandet, the Borealis Sea Hawk, Armida A9 run the NH35. It is basically the same movement as the 6r15 at a much lower price point, giving away only a little power reserve.

Ravi
Guest
Ravi

Hello There.

Recently I purchased an Invicta Pro diver 8927 with NH35A.. The movement is with yellow colored rotor.

The thing is its hand windable BUT non hacking!!
I pull out the crown all the way to adjust the time but the second hand keeps on ticking.

How is it possible? Is it observed in all new watches or is it a flaw considering its assembled i Malaysia?

Kelvin
Guest
Kelvin

Hi Ravi,

NH35A is definitely hacking. Unless it is broken , it could be an Citizen 8215 movement.

Ravi
Guest
Ravi

Hi Kelvin,
Thanks for reply.

The movement is definitely NH35A as per the pics.
Only thing is its not hacking.

Do I need to replace the watch?

It keeps good time though

Marc
Guest
Marc

Hey Ravi
I recently bought a Invicta Mickey Mouse dive watch with the NH35A movt and it is definitely hackable. It’s keeping good time and has only added circa 1 min in a month.

Can anyone suggest/recommend another movt, swiss or Japan that is worthy of adding to a collection.
Thanks.

Marc
Guest
Marc

Edit.. *16 secs in a month

KeepTheTime
Guest

Hi Ravi, can you post pics of your movement? The older version of your watch was actually fitted with an NH25A which is non-hackable and cannot be hand-wound. You have to be careful because some sellers copy and paste the specs directly from the Invicta site and may list the NH35A even though it has the NH25A. This happens a lot with Vostok watches since the models are the same but with different guts.

Jerico
Guest
Jerico

This is true! It happened to me before when ordering from ********. http://www.watchtalkforums.info/forums/thread58911.html

Bert
Guest

I have an Invicta Pro Diver 17042, which is very similar to your watch. I’ve owned it for a about four years. It has the NH35A SII movement which hacks perfectly and is about 8 seconds a day fast. If you have your movement repaired, whatever you do, do not send it to Invicta! They cannot be trusted.

KeepTheTime
Guest

Seiko caliber NH35A in a Haigh & Hastings Classic

Available here

johnnyjohnny
Guest
johnnyjohnny

wow…this website is the darnedest best…i love your NH25 vs. 35 comparison that answered the question of why one member’s NH did not hack. one of the best watch websites i’ve encountered…thank you guys!

johnnyjohnny
Guest
johnnyjohnny

will do!

Jonathan Ferrer
Guest
Jonathan Ferrer

Brew Watch Co. also using the NH35A movement

Winnie
Guest
Winnie

I see this is a community of experts: please HELP. I have recently broken the (mineral) glass of my https://www.invictawatch.com/watches/detail/3049-invicta-pro-diver-men-47mm-stainless-steel-gold-stainless-steel-blue-dial-nh35a-automatic . I wish to replace now the glass with sapphire (I don’t care for the extra cost, as it is a memory). Any idea if this is possible and where to go ask for the sapphire glass ? I hope some guru will read this..

Bert
Guest

If you can precisely measure the broken crystal, I would contact Otto Frei in Oakland, CA. I went there recently for a leather watch strap and clasp. They are amazing. They primarily sell to people in the watch repair business, I believe.

A. David
Guest
A. David

Sir.,
Unfortunately a luminous hour display became unhinged. After trying to get repairmen @ the 60 mile radius to repair it with no success – in addition to Invicta’s poor service reputation – I’m considering procurring a repair station for my Invicta Grand Pro Diver.
I would appreciate any counsel (pro/con) you might share with me. The Demagnatizer worked well, but I seemed to need to use it daily as it would continue to gain time, just slower than prior to using it. Thank you & MERRY CHRISTMAS!

trackback

[…] the market in 1996. Seiko dive watches, such as the Orange Monster, have since been upgraded to the caliber NH35, making Seiko collectors happy because the 7S26 seen here does not hack and is not hand-windable […]

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