Seiko Cal. 5664 - 427

This Spring Drive model from 1970 features a 42mm Two-Tone case. It features a Silver dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-b825ba195c46]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1970

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