Seiko Cal. 5231 - 137

Released in 1994, the Cal. 5231 with design code 137 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-b79caec2fab0]

Also known as: Helmet, Sea Horse

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1994

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