Seiko Cal. 7139 - 437

The Seiko 7139-437 represents an important milestone in Seiko's 1968 lineup. It features a Green dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-8606a558f313]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1968

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