Seiko Cal. 6231 - 288

The Seiko 6231-288 represents an important milestone in Seiko's 1965 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-99b3dbd1e2db]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1965

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