Seiko Cal. 4428 - 864

This Spring Drive model from 1971 features a 44mm Titanium case. It features a White dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-1c6a4247b23c]

Also known as: Samurai, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1971

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