Seiko Cal. 5665 - 663

The Seiko 5665-663 represents an important milestone in Seiko's 1969 lineup. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-1aee598dd395]

Also known as: Helmet, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1969

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