NH35A Black Movement
The Seiko NH35A is a reliable, highly popular automatic mechanical watch movement manufactured by Time Module Inc. (TMI), a subsidiary of Seiko.
- Diameter: 27.4 mm
- Thickness/Height: 5.32 mm
- Jewels: 24 jewels
- Frequency: 21,600 vibrations per hour (6 beats per second)
- Power Reserve: Approximately 41 hours
- Accuracy: -20 to +40 seconds per day
- Winding: Automatic bi-directional winding and manual hand-winding
- Complications: Central hours, minutes, sweeping seconds, and a date window
- Hacking: Yes (the second hand stops when the crown is pulled out)
