---
description: SEIKO NH34 automatic GMT movement, 24 jewels, 21,600 vph, 41h reserve. Genuine Hattori caliber for GMT watch builds and repair.
title: SEIKO (SII) NH34 Mechanical Movement - Sofly
image: https://www.soflypart.com/wp-content/uploads/2023/02/NH34.jpeg
---
[Skip to content](#content)
- [Home](https://www.soflypart.com)
-
- [Products](https://www.soflypart.com/shop/)
-
- [Watch Movements](https://www.soflypart.com/product-category/watch-movements/)
-
- [TMI/Seiko](https://www.soflypart.com/product-category/watch-movements/tmi/)
-
- **SEIKO (SII) NH34 Mechanical Movement**
[](https://www.soflypart.com/wp-content/uploads/2023/02/NH34.jpeg)
[](https://www.soflypart.com/wp-content/uploads/2023/02/NH34A.jpeg)
# SEIKO (SII) NH34 Mechanical Movement
$180.00
You Saved
| Brand | Choose an option SEIKO- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $180.00 |
| 3 - 4 | 5% | $171.00 |
| 5 - 9 | 7% | $167.40 |
| 10+ | 10% | $162.00 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $180.00 |
| 3 - 4 | 5% | $171.00 |
| 5 - 9 | 7% | $167.40 |
| 10+ | 10% | $162.00 |
SEIKO (SII) NH34 Mechanical Movement quantity
Add to cart
x
[Checkout](https://www.soflypart.com/checkout/)
- Covers 99% of Repair Needs
- Wholesale Discounts
- Fast Global Shipping
- 24/7 Customer Support
## Product Description
The SEIKO (SII) NH34 is a genuine Hattori automatic movement featuring a central GMT hand function. With 24 jewels, 21,600 vph (3 Hz), date display and stop‑second device, it is a reliable choice for GMT watch builds, repairs and replacements.
## Features & Function
- **Central GMT hand** – tracks a second time zone independently.
- **Stop‑second (hacking)** – precise time synchronization.
- **Date display** – quick‑set date function.
- **Automatic winding** – bidirectional rotor with manual winding capability.
- **24 jewels** – reduced friction, enhanced durability.
## Specifications
| Parameter | Value |
| --- | --- |
| Caliber | SEIKO NH34 (Hattori) |
| Diameter | 29.0 mm (13‴) |
| Height | 5.5 mm (including GMT) |
| Jewels | 24 |
| Frequency | 21,600 vph (3 Hz) |
| Power reserve | approx. 41 hours |
| Functions | Hours, minutes, GMT hand, sweep seconds, date, hacking |
| Winding | Automatic / manual |
| Hand sizes | Hour 1.50 mm, minute 0.90 mm, GMT 1.50 mm, seconds 0.20 mm |
## Applications
- Ideal for custom GMT watch builds or replacing a faulty movement.
- Compatible with many 28.5 mm dials designed for NH34/NH35.
- Suitable for dive watches, pilot watches, and travel watches requiring a second time zone.
- Professional watch repair and restoration.
## Frequently Asked Questions
**Q1: Is this a genuine SEIKO movement?**
Yes, it is an original Hattori / SII caliber, not a clone.
**Q2: Can I install it in a case designed for ETA 2836?**
The NH34 is thicker (5.5 mm) and has different stem height. Check case compatibility before ordering.
**Q3: Does the GMT hand move independently?**
Yes, the GMT hand is set via the crown independent of the main hour hand.
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
##### Our Popular Items
[](https://www.soflypart.com/product/miyota-citizen-caliber-1l02-quartz-movement/)
### [MIYOTA/CITIZEN Caliber 1L02 Quartz Movement](https://www.soflypart.com/product/miyota-citizen-caliber-1l02-quartz-movement/)
[](https://www.soflypart.com/product/eta-caliber-251-471-quartz-movement/)
### [ETA Caliber 251.471 Quartz Movement](https://www.soflypart.com/product/eta-caliber-251-471-quartz-movement/)
[](https://www.soflypart.com/product/generic-rolex-yacht-master-ii-116681-18k-pusher/)
### [Generic Rolex Yacht-Master II 116681/116688 Pusher 18K Gold/Rose Gold](https://www.soflypart.com/product/generic-rolex-yacht-master-ii-116681-18k-pusher/)
[](https://www.soflypart.com/product/generic-hublot-classic-fusion-chronograph-521-nx-pusher-3-colors/)
### [Generic Hublot Classic Fusion Chronograph 521.NX Pusher (3 colors)](https://www.soflypart.com/product/generic-hublot-classic-fusion-chronograph-521-nx-pusher-3-colors/)
[](https://www.soflypart.com/product/cartier-90-quartz-movement/)
### [Cartier 90 Quartz Movement](https://www.soflypart.com/product/cartier-90-quartz-movement/)
[](https://www.soflypart.com/product/seagull-st1701-mechanical-movement/)
### [Seagull ST1701 Mechanical Movement](https://www.soflypart.com/product/seagull-st1701-mechanical-movement/)
[](https://www.soflypart.com/product/seagull-st2108-moonphase-mechanical-movement/)
### [Seagull ST2108 MoonPhase Mechanical Movement](https://www.soflypart.com/product/seagull-st2108-moonphase-mechanical-movement/)
[](https://www.soflypart.com/product/soprod-a10-2-mechanical-movement/)
### [Soprod A10.2 Mechanical Movement](https://www.soflypart.com/product/soprod-a10-2-mechanical-movement/)
[](https://www.soflypart.com/product/cartier-115a-quartz-movement/)
### [Cartier 115A Quartz Movement | Genuine Swiss Watch Caliber](https://www.soflypart.com/product/cartier-115a-quartz-movement/)
[](https://www.soflypart.com/product/isa-1198-quartz-movement/)
### [ISA 1198 Quartz Movement](https://www.soflypart.com/product/isa-1198-quartz-movement/)
- [](https://www.soflypart.com/product/seiko-vk68-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/seiko-vk68-quartz-movement/)Watch Movements [TMI/Hattori SEIKO VK68 Quartz Movement
](https://www.soflypart.com/product/seiko-vk68-quartz-movement/) $13.50
You Saved
- [](https://www.soflypart.com/product/epson-vx3le-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/epson-vx3le-quartz-movement/)Watch Movements [Hattori VX3LE Quartz Movement
](https://www.soflypart.com/product/epson-vx3le-quartz-movement/) $8.00
You Saved
- [](https://www.soflypart.com/product/eta-902-101-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/eta-902-101-quartz-movement/)Watch Movements [ETA 902.101 Quartz Movement 15.30 × 17.80mm
](https://www.soflypart.com/product/eta-902-101-quartz-movement/) $28.00
You Saved
- [](https://www.soflypart.com/product/miyota-citizen-5y20-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/miyota-citizen-5y20-quartz-movement/)Watch Movements [MIYOTA/CITIZEN 5Y20 Quartz Movement
](https://www.soflypart.com/product/miyota-citizen-5y20-quartz-movement/) $7.00
You Saved
- [](https://www.soflypart.com/product/generic-rolex-yacht-master-ii-116681-18k-pusher/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-rolex-yacht-master-ii-116681-18k-pusher/)Watch Parts [Generic Rolex Yacht-Master II 116681/116688 Pusher 18K Gold/Rose Gold
](https://www.soflypart.com/product/generic-rolex-yacht-master-ii-116681-18k-pusher/) $620.00
You Saved
- [](https://www.soflypart.com/product/miyota-citizen-0s62-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/miyota-citizen-0s62-quartz-movement/)Watch Movements [MIYOTA/CITIZEN 0S62 Quartz Movement
](https://www.soflypart.com/product/miyota-citizen-0s62-quartz-movement/) $16.00
You Saved
- [](https://www.soflypart.com/product/tmi-vd33-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/tmi-vd33-quartz-movement/)Watch Movements [Hattori VD33B Quartz Movement
](https://www.soflypart.com/product/tmi-vd33-quartz-movement/) $9.00
You Saved
- [](https://www.soflypart.com/product/seiko-vd73-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/seiko-vd73-quartz-movement/)Watch Movements [TMI/Hattori SEIKO VD73 Quartz Movement
](https://www.soflypart.com/product/seiko-vd73-quartz-movement/) $6.00
You Saved
- [](https://www.soflypart.com/product/miyota-citizen-4s20-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/miyota-citizen-4s20-quartz-movement/)Watch Movements [MIYOTA/CITIZEN 4S20 Quartz Movement
](https://www.soflypart.com/product/miyota-citizen-4s20-quartz-movement/) $50.00
You Saved
- [](https://www.soflypart.com/product/epson-ym24-quartz-movement/)Quick View [Add to Cart](https://www.soflypart.com/product/epson-ym24-quartz-movement/)Watch Movements [Hattori YM24 Quartz Movement
](https://www.soflypart.com/product/epson-ym24-quartz-movement/) $13.00
You Saved
```json
{"@context":"https://schema.org","@graph":[{"@type":["Store","Organization"],"@id":"https://www.soflypart.com/#organization","name":"Sofly","url":"https://www.soflypart.com","logo":{"@type":"ImageObject","@id":"https://www.soflypart.com/#logo","url":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","contentUrl":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","caption":"Soflypart","inLanguage":"en-US","width":"180","height":"62"},"openingHours":["Mo,Tu,We,Th,Fr,Sa,Su 09:00-17:00"],"image":{"@id":"https://www.soflypart.com/#logo"}},{"@type":"WebSite","@id":"https://www.soflypart.com/#website","url":"https://www.soflypart.com","name":"Soflypart","publisher":{"@id":"https://www.soflypart.com/#organization"},"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https://www.soflypart.com/wp-content/uploads/2023/02/NH34.jpeg","url":"https://www.soflypart.com/wp-content/uploads/2023/02/NH34.jpeg","width":"580","height":"580","caption":"SEIKO NH34 Mechanical Movement","inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/#breadcrumb","itemListElement":[{"@type":"ListItem","position":"1","item":{"@id":"https://www.soflypart.com","name":"Home"}},{"@type":"ListItem","position":"2","item":{"@id":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/","name":"SEIKO (SII) NH34 Mechanical Movement"}}]},{"@type":"WebPage","@id":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/#webpage","url":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/","name":"SEIKO (SII) NH34 Mechanical Movement - Sofly","datePublished":"2023-02-27T17:11:03+08:00","dateModified":"2026-08-12T16:25:04+08:00","isPartOf":{"@id":"https://www.soflypart.com/#website"},"primaryImageOfPage":{"@id":"https://www.soflypart.com/wp-content/uploads/2023/02/NH34.jpeg"},"inLanguage":"en-US","breadcrumb":{"@id":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/#breadcrumb"}},{"@type":"ProductGroup","name":"SEIKO (SII) NH34 Mechanical Movement - Sofly","description":"SEIKO NH34 automatic GMT movement, 24 jewels, 21,600 vph, 41h reserve. Genuine Hattori caliber for GMT watch builds and repair.","sku":"330305002","category":"Watch Movements","mainEntityOfPage":{"@id":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/#webpage"},"image":[{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2023/02/NH34.jpeg","height":"580","width":"580"},{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2023/02/NH34A.jpeg","height":"580","width":"580"}],"url":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/","productGroupID":"330305002","hasVariant":[{"@type":"Product","sku":"330305002","name":"SEIKO (SII) NH34 Mechanical Movement - SEIKO","description":"Product Description The SEIKO (SII) NH34 is a genuine Hattori automatic movement featuring a central GMT hand function. With 24 jewels, 21,600\u202fvph (3\u202fHz), date display and stop\u2011second device, it is a reliable choice for GMT watch builds, repairs and replacements. Features & Function Central GMT hand\u00a0\u2013 tracks a second time zone independently. Stop\u2011second (hacking)\u00a0\u2013 precise time synchronization. Date display\u00a0\u2013 quick\u2011set date function. Automatic winding\u00a0\u2013 bidirectional rotor with manual winding capability. 24 jewels\u00a0\u2013 reduced friction, enhanced durability. Specifications Parameter Value Caliber SEIKO NH34 (Hattori) Diameter 29.0\u202fmm (13\u2034) Height 5.5\u202fmm (including GMT) Jewels 24 Frequency 21,600\u202fvph (3\u202fHz) Power reserve approx. 41\u202fhours Functions Hours, minutes, GMT hand, sweep seconds, date, hacking Winding Automatic / manual Hand sizes Hour 1.50\u202fmm, minute 0.90\u202fmm, GMT 1.50\u202fmm, seconds 0.20\u202fmm Applications Ideal for custom GMT watch builds or replacing a faulty movement. Compatible with many 28.5\u202fmm dials designed for NH34/NH35. Suitable for dive watches, pilot watches, and travel watches requiring a second time zone. Professional watch repair and restoration. Frequently Asked Questions Q1: Is this a genuine SEIKO movement? Yes, it is an original Hattori / SII caliber, not a clone. Q2: Can I install it in a case designed for ETA 2836? The NH34 is thicker (5.5\u202fmm) and has different stem height. Check case compatibility before ordering. Q3: Does the GMT hand move independently? Yes, the GMT hand is set via the crown independent of the main hour hand. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2023/02/NH34-150x150.jpeg","offers":{"@type":"Offer","description":"Product Description The SEIKO (SII) NH34 is a genuine Hattori automatic movement featuring a central GMT hand function. With 24 jewels, 21,600\u202fvph (3\u202fHz), date display and stop\u2011second device, it is a reliable choice for GMT watch builds, repairs and replacements. Features & Function Central GMT hand\u00a0\u2013 tracks a second time zone independently. Stop\u2011second (hacking)\u00a0\u2013 precise time synchronization. Date display\u00a0\u2013 quick\u2011set date function. Automatic winding\u00a0\u2013 bidirectional rotor with manual winding capability. 24 jewels\u00a0\u2013 reduced friction, enhanced durability. Specifications Parameter Value Caliber SEIKO NH34 (Hattori) Diameter 29.0\u202fmm (13\u2034) Height 5.5\u202fmm (including GMT) Jewels 24 Frequency 21,600\u202fvph (3\u202fHz) Power reserve approx. 41\u202fhours Functions Hours, minutes, GMT hand, sweep seconds, date, hacking Winding Automatic / manual Hand sizes Hour 1.50\u202fmm, minute 0.90\u202fmm, GMT 1.50\u202fmm, seconds 0.20\u202fmm Applications Ideal for custom GMT watch builds or replacing a faulty movement. Compatible with many 28.5\u202fmm dials designed for NH34/NH35. Suitable for dive watches, pilot watches, and travel watches requiring a second time zone. Professional watch repair and restoration. Frequently Asked Questions Q1: Is this a genuine SEIKO movement? Yes, it is an original Hattori / SII caliber, not a clone. Q2: Can I install it in a case designed for ETA 2836? The NH34 is thicker (5.5\u202fmm) and has different stem height. Check case compatibility before ordering. Q3: Does the GMT hand move independently? Yes, the GMT hand is set via the crown independent of the main hour hand. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","price":"180","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/?attribute_pa_brand=brand-seiko"}}],"@id":"https://www.soflypart.com/product/seiko-sii-nh34-mechanical-movement/#richSnippet"}]}
```