Seiko Cal. 6231 - 671

The Seiko 6231-671 represents an important milestone in Seiko's 1971 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-32813b8ede5e]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1971

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