Seiko Cal. 4428 - 575

This Automatic model from 1973 features a 36mm PVD Black case. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-3f7632633436]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1973

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