Seiko Cal. 4435 - 391

This Hand-Winding model from 1978 features a 41mm Hardlex-Coated Steel case. With its 19mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-476dd502cfeb]

Also known as: Sumo, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1978

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