Seiko Cal. 5618 - 663

The Seiko 5618-663 represents an important milestone in Seiko's 1969 lineup. With its 18mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-746c45e6df00]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1969

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