Seiko Cal. 5634 - 904

The Seiko 5634-904 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-b9db5ff3ad2b]

Also known as: Turtle, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1966

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