Seiko Cal. 4430 - 780

This Spring Drive model from 1987 features a 41mm PVD Black case. It features a Silver dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-b5fe13cbbe0b]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1987

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