Seiko Cal. 5666 - 649

The Seiko 5666-649 represents an important milestone in Seiko's 1972 lineup. With its 20mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-717e6981592a]

Also known as: Tuna, Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1972

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