Seiko Cal. 5663 - 618

The Seiko 5663-618 represents an important milestone in Seiko's 1975 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-439cfa9ac138]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1975

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