Seiko Cal. 4430 - 677

This Spring Drive model from 1971 features a 38mm Two-Tone case. It features a Silver dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-cea7bcf0b900]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1971

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