 
      Caliber stories 9SA4
The Highly Anticipated Manually Wound
 10-Beat Caliber 9SA4 and its Sensory Appeal
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          Part 1 Design An Evolution 9 Style dress watch was made possible thanks to a hand-winding movement 
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          Part 2 Movement Heightening the sensory value, a Grand Seiko like none before it, the SLGW002/003 
 
              