Seiko Cal. 4591 - 660

This Spring Drive model from 1980 features a 37mm Titanium case. It features a White dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-4941bd0958c2]

Also known as: World Timer, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1980

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