Seiko Cal. 7139 - 736

Seiko 7139-736

The 7139-736 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7139 caliber with 23j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-7b03e08c8780]

Also known as: Sea Horse

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
43mm
Case Thickness
8.3mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Green
Jewels
23j
Frequency
36,000 bph
Power Reserve
72 hours
Year
1993

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seikata-wm-7b03e08c8780