Seiko Cal. 4478 - 903

The Seiko 4478-903 represents an important milestone in Seiko's 1985 lineup. It features a Green dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-a29b143bb2fb]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1985

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