Seiko Cal. 4428 - 371

This Spring Drive model from 1976 features a 45mm PVD Black case. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-2c4ba38dca62]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1976

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