NH34 NH34A GMT Automatic Watch Movement – Seiko (SII/TMI) – Black Date – CT512


In stock

Seiko (SII/TMI) NH34 NH34A GMT Automatic Watch Movement – Black Date


  • Caliber number: NH34 Seiko SII (TMI) Watch Movement
  • Up to 41+ hours of power reserve
  • Movement type: automatic
  • Frequency/Vibrations per hour: 21600 bph
  • Includes watch stem and dial washer (Set the washer’s edges pointing upwards – see second image in gallery or below illustration)
  • Ligne / MM Size: 12″‘ / 26.00 mm
  • Height: 5.32 mm
  • Height with cannon pinion: 7.55 mm
  • Outer Diameter: 27.40 mm
  • Casing Diameter (with dial holding spacer): 29.36 mm
  • Hand Hole Sizes (H/M/S): 150/89/21
  • Factory Regulated
  • 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
  • Black Date calendar at 3:00
  • Compatible with both crown at 3 & 4
  • Brand new 100% genuine Seiko SII/TMI movement incl full length stem supplied regulated
  • All our movements are fully checked and regulated by our master watchmaker before shipping to the customer
  • You are purchasing a complete movement please ensure you are fully aware of the work required and parts needed to complete your build. If you are unsure and not undertaken this before, please do appropriate research before purchase. The forums and YouTube are an excellent resource. Check our education center for an excellent tutorial video link if you are planning to do this work.
  • Watch modding 7S26 upgrade. A very popular modding movement. Upgrade to GMT.
  • In accordance with the normal practice in the trade regarding movements we unfortunately are not able to accept returns on this item.