Seiko Cal. 5649 - 661

The Seiko 5649-661 represents an important milestone in Seiko's 1967 lineup. With its 20mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-23dd3fe93461]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1967

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