Seiko Cal. 5630 - 650

The Seiko 5630-650 represents an important milestone in Seiko's 1968 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-2eab08d06b9f]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1968

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