Seiko Cal. 4428 - 591

This Spring Drive model from 1972 features a 38mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-5e6b20a26d96]

Also known as: Samurai, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1972

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