Seiko Cal. 6688 - 503

The Seiko 6688-503 represents an important milestone in Seiko's 1980 lineup. It features a Navy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-4dcc3c91faca]

Also known as: Sea Horse, Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1980

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