Seiko Cal. 5618 - 673

The Seiko 5618-673 represents an important milestone in Seiko's 1970 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-436abf0d7405]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1970

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