Seiko Cal. 6634 - 730

The Seiko 6634-730 represents an important milestone in Seiko's 1965 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-235faca745dd]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1965

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