Seiko Cal. 6663 - 818

This Spring Drive model from 1978 features a 38mm Two-Tone case. It features a Burgundy dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-b50c8eee05d1]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1978

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