Seiko Cal. 6231 - 166

The Seiko 6231-166 represents an important milestone in Seiko's 1970 lineup. It features a Black dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-611041b9d1a3]

Also known as: Rally, Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1970

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