Seiko Cal. 4431 - 941

This Spring Drive model from 1972 features a 34mm PVD Black case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-39af17a56c24]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1972

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