Seiko Cal. 4440 - 231

The Seiko 4440-231 represents an important milestone in Seiko's 1965 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-ee906f5b0e67]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1965

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