Seiko - Chronograph Sport 100 Black - 1988

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Technical characteristics :
Brand: Seiko
Year: 1990
Movement: Quartz 
Function: date, chronograph, small second, alarm, moon sentence
Housing material: Steel
Boxed material: Steel 
Dimensions of the housing housing: 38.1mm
Dimensions of the case with crown: 40mm
Horn horn dimensions: 44.1mm
thickness (crystal Included): 10.3mm
Entrecorne dimensions: 20mm
Crown: original
Bracelet: original 
Loop: original steel
crystal : Mineral (State: 9/10)
Waterproof: no
Box: Yes
Paper: no
Document: Professional invoice