Product Details
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A Seiko GMT movement - the workhorse for an automatic GMT watch.
A reliable movement from with date function and a 2nd hour function (also known as GMT function). NH34 is currently the most affordable GMT automatic movement, and a near identical version is powering the Seiko Sports 5 GMT.
Key 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
Application and SEIKO MOD COMPATIBILITY:
NH34A and NH35A share the same outer dimensions. Therefore NH34A can replace existing NH35A movements as a GMT upgrade to the watch, you will need a GMT compatible dial & an NH34 compatible GMT watch hand, or you'll most probably need two small modifications to the watch assembly process. Please refer to for more details.
