Seiko Cal. 4439 - 188

The Seiko 4439-188 represents an important milestone in Seiko's 1979 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-92a01dd07597]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1979

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