Seiko Cal. 4478 - 850

Released in 1967, the Cal. 4478 with design code 850 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-6ab551211ad4]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1967

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