Seiko Cal. 7131 - 439

The Seiko 7131-439 represents an important milestone in Seiko's 1979 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-712eea173c32]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1979

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