Seiko Cal. 4478 - 547

Released in 1981, the Cal. 4478 with design code 547 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-8d2fa646739c]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1981

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