Seiko Cal. 4428 - 697

The 4428-697 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-19f80bb3eb8f]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1980

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