Seiko Cal. 7139 - 397

The Seiko 7139-397 represents an important milestone in Seiko's 1974 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-657c9091d4f4]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1974

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