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  Caliber Number: Seiko NH34A

  
  


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  Type: Automatic with manual winding capability

  
  


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  Features:

  
  
  
  
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    Power Reserve: Up to 41+ hours
  
  
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    Frequency: 21,600 vibrations per hour (bph)
  
  
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    Accuracy: -20 to +40 seconds per day
  
  
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    Jewels: 24
  
  
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    Hacking: Stop-second (hack-second) feature for precise time setting
  
  
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    Hands: 4 hands including a 2nd hour hand for the GMT function
  
  
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    Functions: GMT hand, automatic and manual winding, date display
  
  
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    Winding Direction: Clockwise
  
  
  
  


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  Size:

  
  
  
  
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    Diameter: 27.40 mm
  
  
  
  

Additional Information:

The Seiko NH34A is a robust and versatile movement ideal for GMT watches, offering both reliability and functionality. The 2nd hour hand allows tracking of a second time zone, making it an excellent choice for travelers and enthusiasts of multi-time-zone watches.