Seiko Cal. 4447 - 428

Released in 1970, the Cal. 4447 with design code 428 was part of Seiko's domestic market collection. It features a Cream dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-bc23edcc1d14]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1970

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