Seiko Cal. 5231 - 427

The Seiko 5231-427 represents an important milestone in Seiko's 1969 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-ceb09da02b65]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1969

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