Seiko Cal. 5628 - 646

The Seiko 5628-646 represents an important milestone in Seiko's 1979 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-60cd0aac2d49]

Also known as: Sumo, Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1979

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