Seiko Cal. 0713 - 439

Seiko 0713-439

The 0713-439 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0713 caliber with 17j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-f0af6c242284]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
10.2mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
17j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1977

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