Seiko Cal. 4431 - 725

The Seiko 4431-725 represents an important milestone in Seiko's 1969 lineup. It features a Green dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-ac87444d17e7]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1969

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