Seiko Cal. 5664 - 420

The Seiko 5664-420 represents an important milestone in Seiko's 1989 lineup. With its 19mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-436e87920cfe]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1989

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