Seiko Cal. 4427 - 440

This Spring Drive model from 1974 features a 41mm Titanium case. It features a Green dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-225770fe62fd]

Also known as: Crown, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1974

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