Seiko (SII) NH71A Automatic Movement
- Reference Number: NH71A
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Vibrations per hour: 21,600 beats
- Power Reserve: 41 hours
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Jewels: 24
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Diameter: 27.40mm
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Height: 5.32mm
- Rotor Direction: Bi-directional winding (Magic Lever)
- Functions: Hours, Minutes, Central Seconds Hands
- Shock System: Seiko dia-shock