Seiko Cal. 4578 - 451

This Spring Drive model from 1976 features a 44mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-bc18e5987995]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1976

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