Seiko Cal. 4439 - 340

This Spring Drive model from 1974 features a 37mm PVD Black case. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-792d311a1c6c]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1974

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