Seiko Cal. 4431 - 744

This Hand-Winding model from 1980 features a 43mm Hardlex-Coated Steel case. It features a Navy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-9f79a5513718]

Also known as: Sumo, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1980

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