GENUINE Seiko NH34 NH34A 4R34 GMT Movement Automatic Movement GMT- USA SELLER

Description

Expert installation is recommended!
The NH34 GMT Movement will fit in any NH35 case, but requires some unique considerations
as it needs .4mm seconds hand to crystal clearance.
Therefore, it is recommended to use a domed crystal to avoid contact or a different crystal gasket
depending on the case and crystal.
Please do the relevant research on parts compatibility before purchasing.
This is a helpful guide:
https://www.namokimods.com/blogs/namokitimes/everything-you-need-to-know-about-the-seiko-gmt-nh34-movement
Need hands, GMT hands, a crystal, or something else for your mod? Check out my other listings!
I am a professional watch modder and design & manufacture parts.
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Specifications:
Caliber number: Seiko NH34A (aka NH34 or 4R34)
Up to 41+ hours of power reserve
Movement type: automatic
Frequency/Vibrations per hour: 21600 bph
Accuracy: -20~+40 sec per day
Hack-second or stop-second feature allows you to set the time precisely
24 Jewels
Function: 4 Hands including a 2nd hour hand for GMT function, automatic and manual winding, date function
Winding Direction: Clockwise
Diameter: 27.40 mm
Hand bore sizes: hour 1.50, minute .90mm, seconds' .21mm, GMT 2.2mm