Seiko Cal. 5610 - 668

The Seiko 5610-668 represents an important milestone in Seiko's 1965 lineup. With its 18mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-5116f0de6fd1]

Also known as: Bullhead, Helmet

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1965

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