Seiko Cal. 6231 - 669

The Seiko 6231-669 represents an important milestone in Seiko's 1971 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-78e111c6405d]

Also known as: Silverwave, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1971

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