Seiko Cal. 6379 - 557

This Spring Drive model from 1990 features a 36mm Hardlex-Coated Steel case. With its 19mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-a7b79b4adba6]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1990

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