Seiko Cal. 5630 - 669

The Seiko 5630-669 represents an important milestone in Seiko's 1965 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-182ab233783b]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1965

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