Seiko Cal. 5640 - 564

This Spring Drive model from 1965 features a 44mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-d7d774cfafe8]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1965

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