Seiko Cal. 5231 - 407

The Seiko 5231-407 represents an important milestone in Seiko's 1974 lineup. With its 20mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-5b24ffc2fa15]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1974

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