Seiko Cal. 5687 - 613

The Seiko 5687-613 represents an important milestone in Seiko's 1978 lineup. With its 20mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-9995ea0fdac0]

Also known as: Tuna, Flighty

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1978

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