Seiko Cal. 4428 - 931

This Spring Drive model from 1990 features a 39mm Two-Tone case. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-4dd49f8784f2]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1990

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