Seiko Cal. 5669 - 637

This Automatic model from 1985 features a 42mm Two-Tone case. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-fe18ae18fa2f]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1985

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