Seiko Cal. 5663 - 644

The Seiko 5663-644 represents an important milestone in Seiko's 1982 lineup. With its 22mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-058f6f45a5bf]

Also known as: Silverwave, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1982

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