Seiko Cal. 6231 - 279

The 6231-279 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-8becea5bd77a]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1977

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