Seiko Cal. 6613 - 423

The Seiko 6613-423 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-fa873bc73fc3]

Also known as: Bullhead, World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

26j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1979

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