Seiko Cal. 5231 - 715

The Seiko 5231-715 represents an important milestone in Seiko's 1968 lineup. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-083e53650ff8]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1968

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