Seiko Cal. 4430 - 330

This Spring Drive model from 1980 features a 39mm Hardlex-Coated Steel case. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-1ccddc6787c0]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1980

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